Mark adams contact number?
Discussion
Entirely up to you but before spending your money I would also have a chat with Jools - top bloke and very good service. http://www.kitsandclassics.co.uk/engine-ecu/
Chimp871 said:
Need a remap after new stealth cam.
Does anyone have his contact details?
Cheers
How do you know you need a remap? Just someone said it as a matter of course? Its almost impossible for the layman to tell as the ECU will automatically correct the mixture below 3400 rpm, so as long as you dont have loads of shunting, its doing its job. Above 3400 rpm and WOT throttle really does need either a rolling road session to see what the mixture is doing, or you can get a fair idea from looking at the lambda probe output on a road test (that will involve near warp speeds to get a decent reading)- as long as its around 1.2 or more volts you are fine. Mark will charge you for one of his chips plus the remap, and it adds up cost wise. It would make more sense to modify the TVR chip without all the Mark Adams "goodies" in a Tornado chip. This is the angle Joolz takes, so it will cost half as much.Does anyone have his contact details?
Cheers
I'm booked in with jools next week.
It's an 'ok' ride at the moment and from reading here a RR appears norm after a cam change.
Jools was helpful on the phone and said do a RR first then see what results are if any ecu changes are needed then i understand he's one of the few who could adjust the 14cux (I'm not changing it now). Tvr power came up as an option as they change the chip until setup; on paper that seems appealing.
I think you're saying that the current ecu is capable of trimming to a wide scale therefore why adjust? If so let me know so I can make an informed decision whether I'm wasting my time having someone look at the setup - including idle, fuel pessure etc
I've never taken a 450 to RR before either so curiosity has me too.
It's an 'ok' ride at the moment and from reading here a RR appears norm after a cam change.
Jools was helpful on the phone and said do a RR first then see what results are if any ecu changes are needed then i understand he's one of the few who could adjust the 14cux (I'm not changing it now). Tvr power came up as an option as they change the chip until setup; on paper that seems appealing.
I think you're saying that the current ecu is capable of trimming to a wide scale therefore why adjust? If so let me know so I can make an informed decision whether I'm wasting my time having someone look at the setup - including idle, fuel pessure etc
I've never taken a 450 to RR before either so curiosity has me too.
.... above 3000 and its fine and goes as should the issue is driving from standing still in 1st gear when the engine seems hesitant and vague.
If i keep going in 1st its hollow until 3000 rpm then jumps erratically into life. If i repeat this but change into 2nd gear or blip the problem disappears.
If i keep going in 1st its hollow until 3000 rpm then jumps erratically into life. If i repeat this but change into 2nd gear or blip the problem disappears.
The ECU can make some big corrections- I think its around 20%, but you dont want that happening as its closing the stable door after the horse has bolted- its far better to get the mixture correct in the map in the first place. Assuming you run a catalyst car, I think the technique is to copy the origonial fuel map into the non catalyst (green map) This turns off the lambda correction, so you get a true picture of what the mixture is doing. You can then tweak the fuel load points to get the mixture to 14.7 to 1 where its needed, before putting the green map back into the white catalysts tune. This means the minimum correction is needed by the lambda probes. Mind you if you can get away without running catalysts you can simply run a remapped green map. This give better scope to run a richer mixture at the shunting point and idle point (this smooths things out), a leaner under light load to squeeze out the odd extra MPG. You can add pops and bangs on the over run as well if you lean the mixture right off (around 16.5 :1 AFR). As for full power the map is set fuel load cells to 255 (max value) and then tweaking then maps multiplication factor (called the main scalar) to get the basic full power fuel correct. This ensures maximum resolution is available from the map. The map is then reworked backwards from this starting point to get the lower load points correct. I would not mess around with fuel pressure unless the car runs lean at full power and you cant get any more injector opening time. This seems to happen around the 300 plus BHP mark, where bigger injectors are the way to go, then remap.
As for "who can do this" the information and software is now out on the web so you now have a choice other than Mark Adams, but you need some extra hardware to make the ECU programmable- this costs about £150. There are a few people like me that do it just for the fun of it, but don't offer a commercial service as it really needs a rolling road and gas tester and I can only do it on the road as I have an AFR gauge fitted to my car. I think Neil Garner now offers the service (south west) as well as Joolz.
If you want to understand the "bits and bytes" have a read here- all 50 pages of it!
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
As for "who can do this" the information and software is now out on the web so you now have a choice other than Mark Adams, but you need some extra hardware to make the ECU programmable- this costs about £150. There are a few people like me that do it just for the fun of it, but don't offer a commercial service as it really needs a rolling road and gas tester and I can only do it on the road as I have an AFR gauge fitted to my car. I think Neil Garner now offers the service (south west) as well as Joolz.
If you want to understand the "bits and bytes" have a read here- all 50 pages of it!
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Edited by blitzracing on Tuesday 19th July 19:47
Edited by blitzracing on Tuesday 19th July 19:50
Logging data from rover gauge will also tell you if you are trimming more than the ECU can cope with. Why that might be so is also affected by more than the ecu map. Ignition - coil, extenders and leads are consumables on these cars, AfM and set- up of same can make a difference plus fault codes caused by things like lambda probes have the ability to make the car do things it shouldn't!
And i agree with all that, I've done everything myself upto now but perfecting running outside initial timing is not something i know much about. I'd like a pro like jools to check it over, first time my is on a 450 RR is my reward.
Just glad i was put onto Jools - thanks for the nod.
Just glad i was put onto Jools - thanks for the nod.
Closing the loop.
Joolz, very nice guy who knows his trade -highly recommended.
On the RR the car bhp and torque was already very good,according to Joolz and didn't need tweaking. He then focused on the mapping at mid rev range and then cut a chip and put it in. Car runs very smoothly now.
Dyno graph below - let me know if its alright.
Joolz, very nice guy who knows his trade -highly recommended.
On the RR the car bhp and torque was already very good,according to Joolz and didn't need tweaking. He then focused on the mapping at mid rev range and then cut a chip and put it in. Car runs very smoothly now.
Dyno graph below - let me know if its alright.
Tvr forum here has been great, its one of the main reasons i bought a chimp over a 996 porsche a couple years back. The knowledge/support has been great.
Until this car i'd done regular car repairs but nothing like heads off, skimming, new cam, rebuilding bits and bobs. But loved every minute....
That's why that RR was important for me to see if engine was in good nick after a top end rebuild. Kind of suggests i put it back right.
Hopefully now i can help others as others have helped me.....
Meanwhile its in for its retest in emissions after last weeks MOT failure
Until this car i'd done regular car repairs but nothing like heads off, skimming, new cam, rebuilding bits and bobs. But loved every minute....
That's why that RR was important for me to see if engine was in good nick after a top end rebuild. Kind of suggests i put it back right.
Hopefully now i can help others as others have helped me.....
Meanwhile its in for its retest in emissions after last weeks MOT failure
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