R53 17% Pulley upgrade
Discussion
Ran a 17 pulley for 20,000 without a remap after 1st mini oem service @ 10k
Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
Edited by blue al on Sunday 26th June 16:58
blue al said:
Ran a 17 pulley for 20,000 without a remap after 1st mini oem service @ 10k
Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
That’s excellent!!Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
Edited by blue al on Sunday 26th June 16:58
and31 said:
blue al said:
Ran a 17 pulley for 20,000 without a remap after 1st mini oem service @ 10k
Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
That’s excellent!!Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
Edited by blue al on Sunday 26th June 16:58
You say you mapped it when fitting cam etc, and that it has (let's say for simplicity) lots of hard use, but not how much of that was before the map.
E-bmw said:
and31 said:
blue al said:
Ran a 17 pulley for 20,000 without a remap after 1st mini oem service @ 10k
Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
That’s excellent!!Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
Edited by blue al on Sunday 26th June 16:58
You say you mapped it when fitting cam etc, and that it has (let's say for simplicity) lots of hard use, but not how much of that was before the map.
Used harder after first 1k, and progressively even harder after 10k when I had pulley fitted by GTT
miltek, janspeed manifold bbk etc over next 18k, the sound is addictive and encourages you to use the rev range.
If your asking did I baby it because I knew it hadn’t been mapped, the answer is a firm no, as none of the specialists at that time were recommending a map, if I thought it needed one I would have done it,
The map I added was for bigger injectors, as well Newman cam, ported head etc
Look on mini2 and mini torque all the history is still there if you dig under Alski
Ps; I had a gift of a mini car experience at rockingham just prior to delivery, which allowed me to flog somebody’s car so I could gently bed mine in. I did at least double oil changes over my ownership.
blue al said:
E-bmw said:
and31 said:
blue al said:
Ran a 17 pulley for 20,000 without a remap after 1st mini oem service @ 10k
Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
That’s excellent!!Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
Edited by blue al on Sunday 26th June 16:58
You say you mapped it when fitting cam etc, and that it has (let's say for simplicity) lots of hard use, but not how much of that was before the map.
My understanding & that of many others is that due to the fixed map above 4k rpm that any change to the air put into the engine (reduced pulley) will make these run lean (possibly very lean) on WOT above 4k rpm.
You said you fitted a pulley at 10k & then got it mapped at 30K.
You go on to mention your drag runs & track days etc, but not if you did these before the map.
I was asking for more details, as to if you did these before getting the car mapped?
E-bmw said:
blue al said:
E-bmw said:
and31 said:
blue al said:
Ran a 17 pulley for 20,000 without a remap after 1st mini oem service @ 10k
Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
That’s excellent!!Only added a map when I changed cams, added intercooler, performance exhaust did headwork etc at 28k,
Then decided on water-meth injection and a 20% pulley at 100k for more instant umph & giggles for my daily driver duties.
Car ran from a delivery trailer pdi miles in September 2005 to 145k in my ownership, sold on to a 911 owner who was amazed at the performance. Unfortunately car was broken for parts less year after I sold it for the head to go into a turbocharged R53 to make even bigger power.
In all that time the car was making at least 100 bhp over stock cooper s, it had 2 trips piggy back from the AA
Once when the heater matrix in the cabin failed, secondly when radiator hose gave in.
I guess more than 100 drag strip run’s + and well over 100 hours of track time, mostly at Bedford lots of full throttle action. About 50 Dyno charts from 5 different sets of rollers all showing healthy numbers
Perhaps I was lucky over 9.5 years of ownership, perhaps it’s because car was well maintained and serviced,
By myself and 1320.
Edited by blue al on Sunday 26th June 16:58
You say you mapped it when fitting cam etc, and that it has (let's say for simplicity) lots of hard use, but not how much of that was before the map.
My understanding & that of many others is that due to the fixed map above 4k rpm that any change to the air put into the engine (reduced pulley) will make these run lean (possibly very lean) on WOT above 4k rpm.
You said you fitted a pulley at 10k & then got it mapped at 30K.
You go on to mention your drag runs & track days etc, but not if you did these before the map.
I was asking for more details, as to if you did these before getting the car mapped?
the supercharger wine and induction noise, encourage you to use all the performance.
The car liked it, I liked it,…I even raised the rev limit to 7,450 after remap,
Possibly only 2 or 3 serious track days in 2006/7 Bedford/Abingdon and some Ad hoc sessions at Silverstone and dunsfold.
I don’t recall many horror stories from other owners “in period” or overall so my understanding and experience obviously differs from your “sources” I ran the standard s injectors 330, again others recommend that you “must” upgrade to the Jcw 380 but I never got that memo…
To wrap this up nicely for you I can only reiterate again that it was very well looked after and hardly ever thrashed from cold, ran on Tesco 99, 18,000 miles or so of running 17% pulley didn’t pan out badly the stock pistons and original rings were still going strong, when I passed it on.
Thanks for that, good info, anecdotally, I am led to believe that the upgrade to 99RON can help, but either way, it sounds like yours did OK.
ETA. the upgrade to 380s would only be advisable after a cam as the standard injectors are then potentially well over 90% duty ratio, which can accelerate wear etc.
The fact that yours lasted well doesn't change the fact that over 4k rpm the ECU is operating on a fixed map rather than self-regulating so sustained WOT will mean the engine is running lean with a pulley upgrade & no remap.
What can also occasionally be seen without a map is occasional EML warnings when on more than a few seconds of WOT, that disappear after a couple of miles of more normal running.
As you have proven there are exceptions, but the rule of thumb is to get a map for any pulley upgrade & run on 99 RON.
ETA. the upgrade to 380s would only be advisable after a cam as the standard injectors are then potentially well over 90% duty ratio, which can accelerate wear etc.
The fact that yours lasted well doesn't change the fact that over 4k rpm the ECU is operating on a fixed map rather than self-regulating so sustained WOT will mean the engine is running lean with a pulley upgrade & no remap.
What can also occasionally be seen without a map is occasional EML warnings when on more than a few seconds of WOT, that disappear after a couple of miles of more normal running.
As you have proven there are exceptions, but the rule of thumb is to get a map for any pulley upgrade & run on 99 RON.
Edited by E-bmw on Wednesday 29th June 10:46
E-bmw said:
Thanks for that, good info, anecdotally, I am led to believe that the upgrade to 99RON can help, but either way, it sounds like yours did OK.
ETA. the upgrade to 380s would only be advisable after a cam as the standard injectors are then potentially well over 90% duty ratio, which can accelerate wear etc.
The fact that yours lasted well doesn't change the fact that over 4k rpm the ECU is operating on a fixed map rather than self-regulating so sustained WOT will mean the engine is running lean with a pulley upgrade & no remap.
What can also occasionally be seen without a map is occasional EML warnings when on more than a few seconds of WOT, that disappear after a couple of miles of more normal running.
As you have proven there are exceptions, but the rule of thumb is to get a map for any pulley upgrade & run on 99 RON.
ETA. the upgrade to 380s would only be advisable after a cam as the standard injectors are then potentially well over 90% duty ratio, which can accelerate wear etc.
The fact that yours lasted well doesn't change the fact that over 4k rpm the ECU is operating on a fixed map rather than self-regulating so sustained WOT will mean the engine is running lean with a pulley upgrade & no remap.
What can also occasionally be seen without a map is occasional EML warnings when on more than a few seconds of WOT, that disappear after a couple of miles of more normal running.
As you have proven there are exceptions, but the rule of thumb is to get a map for any pulley upgrade & run on 99 RON.
Edited by E-bmw on Wednesday 29th June 10:46
I wonder why the new “advice “ to get a map with a pulley ?
Surely all the tuners knew how the old map behaved back in the day?
and31 said:
E-bmw said:
Thanks for that, good info, anecdotally, I am led to believe that the upgrade to 99RON can help, but either way, it sounds like yours did OK.
ETA. the upgrade to 380s would only be advisable after a cam as the standard injectors are then potentially well over 90% duty ratio, which can accelerate wear etc.
The fact that yours lasted well doesn't change the fact that over 4k rpm the ECU is operating on a fixed map rather than self-regulating so sustained WOT will mean the engine is running lean with a pulley upgrade & no remap.
What can also occasionally be seen without a map is occasional EML warnings when on more than a few seconds of WOT, that disappear after a couple of miles of more normal running.
As you have proven there are exceptions, but the rule of thumb is to get a map for any pulley upgrade & run on 99 RON.
ETA. the upgrade to 380s would only be advisable after a cam as the standard injectors are then potentially well over 90% duty ratio, which can accelerate wear etc.
The fact that yours lasted well doesn't change the fact that over 4k rpm the ECU is operating on a fixed map rather than self-regulating so sustained WOT will mean the engine is running lean with a pulley upgrade & no remap.
What can also occasionally be seen without a map is occasional EML warnings when on more than a few seconds of WOT, that disappear after a couple of miles of more normal running.
As you have proven there are exceptions, but the rule of thumb is to get a map for any pulley upgrade & run on 99 RON.
Edited by E-bmw on Wednesday 29th June 10:46
I wonder why the new “advice “ to get a map with a pulley ?
Surely all the tuners knew how the old map behaved back in the day?
I can easily see how that wouldn't be discovered until a proper mapper would get their hands on one, but the advice has been around in the mini circles for a long time now.
ETA. The advice was given to me by several that have modified these cars when I bought mine before modifying in 2016.
Edited by E-bmw on Wednesday 29th June 15:25
E-bmw said:
The advice is nothing new, it may have been overlooked before someone found the issue with the map above 4k.
I can easily see how that wouldn't be discovered until a proper mapper would get their hands on one, but the advice has been around in the mini circles for a long time now.
ETA. The advice was given to me by several that have modified these cars when I bought mine before modifying in 2016.
1320 advised me that a map wasn’t needed on mine in 2017 when I had the pulley done(it is a -15 percent though) they had it on their rollers and said fuelling was fine.I can easily see how that wouldn't be discovered until a proper mapper would get their hands on one, but the advice has been around in the mini circles for a long time now.
ETA. The advice was given to me by several that have modified these cars when I bought mine before modifying in 2016.
Edited by E-bmw on Wednesday 29th June 15:25
and31 said:
E-bmw said:
The advice is nothing new, it may have been overlooked before someone found the issue with the map above 4k.
I can easily see how that wouldn't be discovered until a proper mapper would get their hands on one, but the advice has been around in the mini circles for a long time now.
ETA. The advice was given to me by several that have modified these cars when I bought mine before modifying in 2016.
1320 advised me that a map wasn’t needed on mine in 2017 when I had the pulley done(it is a -15 percent though) they had it on their rollers and said fuelling was fine.I can easily see how that wouldn't be discovered until a proper mapper would get their hands on one, but the advice has been around in the mini circles for a long time now.
ETA. The advice was given to me by several that have modified these cars when I bought mine before modifying in 2016.
Edited by E-bmw on Wednesday 29th June 15:25
Any ideas on power gains for the combination of 15% pulley, uprated plugs and better intercooler? Is 210-220bhp realistic? And what sort of cost for a tuner to fit that lot?
Also does it make any difference if you base on the 163bhp model or the later 170bhp one? e.g. does the 7bhp difference carry over when tuned?
Also does it make any difference if you base on the 163bhp model or the later 170bhp one? e.g. does the 7bhp difference carry over when tuned?
WayOutWest said:
Any ideas on power gains for the combination of 15% pulley, uprated plugs and better intercooler? Is 210-220bhp realistic? And what sort of cost for a tuner to fit that lot?
Also does it make any difference if you base on the 163bhp model or the later 170bhp one? e.g. does the 7bhp difference carry over when tuned?
With a -15%pulley,Milltek cat back and cold air induction kit and different plugs I got a little under 200bhp-car was transformed-well worth doing. .Also does it make any difference if you base on the 163bhp model or the later 170bhp one? e.g. does the 7bhp difference carry over when tuned?
I now have a GRS motorsport intercooler fitted.mine is a facelift car that started off with 170 bhp.
It’s not about chasing numbers for me,car felt much quicker,money well spent in my opinion.
On a side note,when my car was having the work done at 1320,they lent me their R56 demo car for the day-f
king hell that was fast!! Hilariously fast hahaha
One of the quickest things I’ve ever driven!!
On a side note,when my car was having the work done at 1320,they lent me their R56 demo car for the day-f
king hell that was fast!! Hilariously fast hahahaOne of the quickest things I’ve ever driven!!
Carlson W6 said:
1320 are the most experienced and respected mini tuners in the UK. You can trust their advice 100%. They are absolutely 100% straight: no BS whatsoever. They look after both our minis (GP1 standard & R53 JCW with cam, pulley, intercooler, map @ 243bhp at wheels).
+1 had my engine built by 1320. Absolutely brilliant. I know the r53 isn't everyones taste but I am absolutely hooked Edited by Ozzer2006 on Thursday 28th July 15:05
Edited by Ozzer2006 on Thursday 28th July 15:09
Carlson W6 said:
1320 are the most experienced and respected mini tuners in the UK. You can trust their advice 100%. They are absolutely 100% straight: no BS whatsoever. They look after both our minis (GP1 standard & R53 JCW with cam, pulley, intercooler, map @ 243bhp at wheels).
+1 had my engine built by 1320. Absolutely brilliant. I know the r53 isn't everyones taste but I am absolutely hooked Edited by Ozzer2006 on Thursday 28th July 15:05
Edited by Ozzer2006 on Thursday 28th July 15:43
Ozzer2006 said:
+1 had my engine built by 1320. Absolutely brilliant. I know the r53 isn't everyones taste but I am absolutely hooked
Out of interest what did you have done?Edited by Ozzer2006 on Thursday 28th July 15:05
Edited by Ozzer2006 on Thursday 28th July 15:09
Possibly looking to get a cam donenext year
and31 said:
Ozzer2006 said:
+1 had my engine built by 1320. Absolutely brilliant. I know the r53 isn't everyones taste but I am absolutely hooked
Out of interest what did you have done?Edited by Ozzer2006 on Thursday 28th July 15:05
Edited by Ozzer2006 on Thursday 28th July 15:09
Possibly looking to get a cam donenext year
Cannot explain how well it runs and how it feels genuinely better than when it was nearly new.
Twice a week I have a commute of about 60 miles all B roads no other car can make me smile as much as the mini.
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