As promised, 996tt heap of mods, heres my experience.
Discussion
As those may or may not remember, I’ve undertaken a whole heap of mods from multiple vendors/indys and promised to report back my findings and experiences of each. I have also been through multiple exhausts, 3 in total for various reasons as well as 3 chips/remaps. Here goes, please note this is my experience, it’s a bit long but I have chucked it all on here for those who are embarking on mods.
In Feb/March I ordered some bits and bobs and it’s been a roller coaster for 6 months, I never in my wildest dreams imagined it would take this long to get the combination of mods to work together. As most will know, you cant just throw cash at these cars, the mods need to be well thought out and structured. A mistake I made
but didn’t learn the hard way just the long way.
MY FIRST MOD, REMAP.
I originally decided to go with a Pendle Performance map. This was while I was running K16s and cargraphic exhaust, absolutely superb, never skipped a beat and done what it said on the tin. Improved lag, boost and smoothed out the lower end of the rev range.
Once I added the turbos, MD434's from turbo dynamics, I had to get the map redone, Pendle was to far (Yorkshire) so I got Austec to do it and Tognola to fit the turbos, design911 enlarged headers, another branded titanium exhaust, silicon boost hoses and forge DVs.
To say we had major problems is an understatement, no bodies fault really just unfortunate circumstances. Austec tried to adjust the map but Pendle had placed a "no read" on the file. This completely scrambled my ecu and lost its sync with the immobiliser brain. The only cure was the Porsche Bosch tool and a complete clearing of the ecu and immobiliser brain. This meant dealing with Porsche GB to release my security codes!!! What a bunch of morons. I dont get this b0ll0cks, its my car, my ecu, my immobiliser, why on earth will they not release my codes. I sent them everything, log book, passport, D license and nothing- "sorry we dont release codes"! So Diablo engineering finally got the codes for me and recoded everything. 2 week Nightmare!
Once the map was done, the car would not boost passed 1.0 bar regardless of what the ecu tells it. So, I set about changing the actuators to 1.3bar units from AET, whilst there, I got Austec to add a 5 bar Fuel Pressure Regulator. Well......still no joy, we just couldn’t work out what was wrong.
I wasn’t happy with the car, it would occasionally throw up the dreaded Check Engine light so I took it to Fearnsport. Wow, what a breath of fresh air! Immediately, Mat tried to remap the car but he had the same problems and diagnosed all sorts of issues with the N75 valve, apparently it had a checksum error. The car was better but still not spot on, something was missing. Mat advised me to get the stupidly loud titanium exhaust off and come back because he felt it was holding back boost (Ill come to that below).
So, I put the standard one back on, fired the car up and.........magic, the car was phenomenal!! Immediately it pulled like a train, like nothing id ever driven.
Well I’ve just picked the car up today after putting on my third exhaust, Fabspeed and another remap and some other bits like sticking DV's and the car is just incredible! I have never driven or been in anything so quick, just outstanding. Hats of to Fearn, they just know these cars so well, saves time and effort!
EXHAUST.
My Cargraphic exhaust was just to tame, some good power increases with the map but just to tame unless you were on the gas.
Titanium exhaust was ridiculously loud!! You just couldn’t live with it. Then, Mat at Fearn put the final boot in by telling me that was the root of all my problems. It’s just too restrictive; the titanium bends are just too tight and awkward.
Now I have a Milltek fitted, just brilliant, perfect, nice growl and not to loud but throatier at lower revs. Very pleased with it.
MAPS.
As stated, Pendle was great, no problem, Austec, didn’t get a chance to use it due to the exhaust and ecu issues/ Fearn is by far the best, really smooth, some lag but not loads.
TURBO'S
MD434, enlarged and flowed housing, cut back blades based on K24's. Scary! They are laggy, but my god when they come on boost, smiles ear to ear!
INDY'S.
Tognola were not bad, there was some delay and my water hose popped off on the way home but they were attentive and honest. They also done my callipers, paint and laquered. Good job but unfortunately they've faded again. I shall be contacting them Monday and will see if they stand by their word.
Austec were not bad, they did take their time once things went wrong. Once I lost my rag things seemed to speed up. Paul is good but he's very very busy. There is a chap on this forum who was getting his done and had no problems so I think mine was just but luck.
Fearn, without doubt are geniuses, Mat really really knows his stuff. I will never go anywhere else, Im very confident in what Mat tells me, its a nice feeling, and they are not that expensive.
Well that’s it really, a bit long but hopefully it helps some of you about to embark on mods.
To summarise, Turbos MD434 (Turbo Dynamics,) 5 bar FPR, DTek Hoses, Forge DVs, Milltek exhaust, Fearn remap, enlarged headers, 1.3bar actuators.
Thanks.
In Feb/March I ordered some bits and bobs and it’s been a roller coaster for 6 months, I never in my wildest dreams imagined it would take this long to get the combination of mods to work together. As most will know, you cant just throw cash at these cars, the mods need to be well thought out and structured. A mistake I made
but didn’t learn the hard way just the long way.MY FIRST MOD, REMAP.
I originally decided to go with a Pendle Performance map. This was while I was running K16s and cargraphic exhaust, absolutely superb, never skipped a beat and done what it said on the tin. Improved lag, boost and smoothed out the lower end of the rev range.
Once I added the turbos, MD434's from turbo dynamics, I had to get the map redone, Pendle was to far (Yorkshire) so I got Austec to do it and Tognola to fit the turbos, design911 enlarged headers, another branded titanium exhaust, silicon boost hoses and forge DVs.
To say we had major problems is an understatement, no bodies fault really just unfortunate circumstances. Austec tried to adjust the map but Pendle had placed a "no read" on the file. This completely scrambled my ecu and lost its sync with the immobiliser brain. The only cure was the Porsche Bosch tool and a complete clearing of the ecu and immobiliser brain. This meant dealing with Porsche GB to release my security codes!!! What a bunch of morons. I dont get this b0ll0cks, its my car, my ecu, my immobiliser, why on earth will they not release my codes. I sent them everything, log book, passport, D license and nothing- "sorry we dont release codes"! So Diablo engineering finally got the codes for me and recoded everything. 2 week Nightmare!
Once the map was done, the car would not boost passed 1.0 bar regardless of what the ecu tells it. So, I set about changing the actuators to 1.3bar units from AET, whilst there, I got Austec to add a 5 bar Fuel Pressure Regulator. Well......still no joy, we just couldn’t work out what was wrong.
I wasn’t happy with the car, it would occasionally throw up the dreaded Check Engine light so I took it to Fearnsport. Wow, what a breath of fresh air! Immediately, Mat tried to remap the car but he had the same problems and diagnosed all sorts of issues with the N75 valve, apparently it had a checksum error. The car was better but still not spot on, something was missing. Mat advised me to get the stupidly loud titanium exhaust off and come back because he felt it was holding back boost (Ill come to that below).
So, I put the standard one back on, fired the car up and.........magic, the car was phenomenal!! Immediately it pulled like a train, like nothing id ever driven.
Well I’ve just picked the car up today after putting on my third exhaust, Fabspeed and another remap and some other bits like sticking DV's and the car is just incredible! I have never driven or been in anything so quick, just outstanding. Hats of to Fearn, they just know these cars so well, saves time and effort!
EXHAUST.
My Cargraphic exhaust was just to tame, some good power increases with the map but just to tame unless you were on the gas.
Titanium exhaust was ridiculously loud!! You just couldn’t live with it. Then, Mat at Fearn put the final boot in by telling me that was the root of all my problems. It’s just too restrictive; the titanium bends are just too tight and awkward.
Now I have a Milltek fitted, just brilliant, perfect, nice growl and not to loud but throatier at lower revs. Very pleased with it.
MAPS.
As stated, Pendle was great, no problem, Austec, didn’t get a chance to use it due to the exhaust and ecu issues/ Fearn is by far the best, really smooth, some lag but not loads.
TURBO'S
MD434, enlarged and flowed housing, cut back blades based on K24's. Scary! They are laggy, but my god when they come on boost, smiles ear to ear!
INDY'S.
Tognola were not bad, there was some delay and my water hose popped off on the way home but they were attentive and honest. They also done my callipers, paint and laquered. Good job but unfortunately they've faded again. I shall be contacting them Monday and will see if they stand by their word.
Austec were not bad, they did take their time once things went wrong. Once I lost my rag things seemed to speed up. Paul is good but he's very very busy. There is a chap on this forum who was getting his done and had no problems so I think mine was just but luck.
Fearn, without doubt are geniuses, Mat really really knows his stuff. I will never go anywhere else, Im very confident in what Mat tells me, its a nice feeling, and they are not that expensive.
Well that’s it really, a bit long but hopefully it helps some of you about to embark on mods.
To summarise, Turbos MD434 (Turbo Dynamics,) 5 bar FPR, DTek Hoses, Forge DVs, Milltek exhaust, Fearn remap, enlarged headers, 1.3bar actuators.
Thanks.
Edited by VonSenger on Sunday 13th September 21:54
Edited by jeremyc on Friday 1st November 19:17
Cheers guys, not been cheap but worth it! I tried to get the car on a rolling road a couple of months ago but the front diff packed up! This caused the PSM/ABS to freak out. OPC suprisingly swapped it out under warranty.
I haven't had time to get it back on there. Mat was going to get it done for me but again we run out of time.
Does anyone know a decent realistic RR in Surrey or Sussex?
Thanks in advance.
I haven't had time to get it back on there. Mat was going to get it done for me but again we run out of time.
Does anyone know a decent realistic RR in Surrey or Sussex?
Thanks in advance.
Bodmin said:
VonSenger said:
Cheers guys, not been cheap but worth it! I tried to get the car on a rolling road a couple of months ago but the front diff packed up! This caused the PSM/ABS to freak out. OPC suprisingly swapped it out under warranty.
I haven't had time to get it back on there. Mat was going to get it done for me but again we run out of time.
Does anyone know a decent realistic RR in Surrey or Sussex?
Thanks in advance.
Give Charlie(Vixpy1 on PH) a call at Surrey Rolling Road I haven't had time to get it back on there. Mat was going to get it done for me but again we run out of time.
Does anyone know a decent realistic RR in Surrey or Sussex?
Thanks in advance.
www.surreyrollingroad.co.uk
They have a 4wd dyno as seen in this months edition of EVO magazine testing a Nissan GTR.
Bodders
Vixpy1 said:
VonSenger said:
Bodmin said:
VonSenger said:
Cheers guys, not been cheap but worth it! I tried to get the car on a rolling road a couple of months ago but the front diff packed up! This caused the PSM/ABS to freak out. OPC suprisingly swapped it out under warranty.
I haven't had time to get it back on there. Mat was going to get it done for me but again we run out of time.
Does anyone know a decent realistic RR in Surrey or Sussex?
Thanks in advance.
Give Charlie(Vixpy1 on PH) a call at Surrey Rolling Road I haven't had time to get it back on there. Mat was going to get it done for me but again we run out of time.
Does anyone know a decent realistic RR in Surrey or Sussex?
Thanks in advance.
www.surreyrollingroad.co.uk
They have a 4wd dyno as seen in this months edition of EVO magazine testing a Nissan GTR.
Bodders
. Only a handful of RR's in the country have the correct fans to get air into the intercoolers, bear this in mind wherever you go. Thanks for letting me know. Any ideas who has the right kit?ZeroH said:
Callughan said:
VonSenger said:
Callughan said:
Would cool to get some vbox times?
Hi Cal, hope that C4S of yours is still great! Vbox, whats that?Really glad your car is A1 now, Vbox is just a GPS based performance computer/accelerometer to measure performance.
ZeroH has one, I am sure he would be up for comparing stats one evening etc..
Edited by Callughan on Sunday 13th September 21:23
) As Cal says, I'm always up for some ad-hoc timing - rolling roads only tell half the story, its the numbers that count which is why I data logged my car pre and post remap. As far as rolling roads go, given your location try Ray West who can definitely do turbos and is based in Thruxton.
Totally agree on everything you've said as regards Matt @ Fearnsport - he is top dog as far as I'm concerned and a genuinely nice guy.
Suprised you went with the fabspeed exhaust but interested to hear how it sounds...
V-box sounds good, we should arrange a meet.
ZeroH said:
VonSenger said:
hahaha, quality, I just realised what I done. My exhaust is Milltek not fabspeed..... Doh, for some reason I assumed Matt got me a Fabspeed, but its definately a Milltek!
wally.
Been in the US since August but back today !!wally.
Yeah I couldnt understand why you'd go for a Fabspeed out of all exhausts, least of all that Matt would recommend or fit one !!! I know Matt likes the Milltek and recommends it to people that don't want to stretch to the Europipe.... I love mine and its really opening up now its got a few miles under it. Interestingly its elbows are actually less restrictive to that of the EP also !
When are you next in town? would be good to meet up soon.
well the saga continues! Put the car on the rollers today at SPC in Horsham. First of all the car kept twitching when the turbos came on boost so after 20 mins of adjustment it finally sat still. However, the car would spin the wheels up at 5000rpm, so the rollers were reading 5k but the car was really doing 6.5k. We thought it was the fact there wasnt enough weight on the back wheels so they tried more pressure on the straps but nothing! We tried waiting for the tyres to warm up but it still kept spinning the wheels up!
Basically the spinning of the wheels meant the dyno was only seeing 5k rpm instead of the true 6.5-7k rpm!
Im off to Paramount in slough tomorrow but will definately be at the 911uk dyno day, thanks for the email Zero, are you going?
Basically the spinning of the wheels meant the dyno was only seeing 5k rpm instead of the true 6.5-7k rpm!
Im off to Paramount in slough tomorrow but will definately be at the 911uk dyno day, thanks for the email Zero, are you going?
On a similar note, had my car dynoed today by a certain dyno company......Not impressed, the fan equipment was woefully poor!!! They were like fans you'd use in your house on a hot day!!! The dyno read out is not to bad considering its normal 97 super instead of vpower and the air temps were way to high. Cant wait till Saturday
Edited by VonSenger on Tuesday 22 September 21:34
ZeroH said:
VonSenger said:
On a similar note, had my car dynoed today by a certain dyno company......Not impressed, the fan equipment was woefully poor!!! They were like fans you'd use in your house on a hot day!!! The dyno read out is not to bad considering its normal 97 super instead of vpower and the air temps were way to high. Cant wait till Saturday
Lol... I did try and warn you !! WTF use is plotting MPH on the x axis ? And wheres the power to the wheels, the boost info, the AFR's ? Luckily when I ran there it was a freebie... sure as heck wouldnt pay for it, and I had to think twice as to let my car run on a set up with such poor cooling. Did it in the end as was too curious to know what it would run, having just seen a GT2 and 997tt run !!Edited by VonSenger on Tuesday 22 September 21:34
Seperately, thats impressive power on the dyno. Those big turbo's are clearly flowing pretty well, albeit how does the power translate on the road... you find it useable ? Are you still running the stock 420tt intercoolers ?
Look forward to running on Sat... Evolve have proper charts and better cooling... I always enjoy rolling road days regardless whether or not they replicate "porsche hp" or real world conditions - its a bit of fun and always interesting as a comparison on the day between cars.
The power delivery is perfect for me, its laggy but that means I now achieve 30mpg on motorways because boost only kicks in when provoked!! It achieves full boost at about 3.5k and holds it well. My only gripe is the constant interuptions I now get from PSM and TC even in the dry and in a straight line!
Because I was up that way today I thought sod it, for £45 I may as well do it. Torque figures are supposed to be down the right hand side but that cant be right can it??????
Thanks for your positive feedback bud.
Edited by VonSenger on Tuesday 22 September 22:16
996ttalot said:
Update:-
Finally got redesigned hoses from FM, and no boost leak at last.
Have changed map to a revised custom mapp written for existing modifications. Boost set to 1.2bar.
Mods:
DVs
Filter
Blown6 ICs
Cargrahic IP (70)
Custom mapp
Since many of you have modified 996tt, would be interested in 100-200 times if you have got them http://www.pistonheads.com/gassing/topic.asp?h=0&a... times.
I don't have a way of timing that other than my mate sitting in the car, me shouting start, and then stop. Not the most scientific method, but I know it is around high 6s, low 7 seconds. That is one gear (third - tiptronic), from constant 100, and then floor it.
I created a separate thread because I really don't think you can get a good enough dyno reading that can be relied upon - too many factors.
Currently planning
- hybrid k16s
- exhaust + headers ( need to do headers since I have a slight gasket leak until it warms up).
Are any of you near to Gatwick? Would like to meet with others who have modified to compare notes.
As you may have read in this thread, there are some interesting stories with different results. All I can say is that I am extremely happy with performance. I started with the standard dvs, filter and stage 1 map, then moved to ICs/IP and stage 2 map. But had the leak, but it was still quite a bit quicker.
Now it is how it should be.
I am, drop me a pm.Finally got redesigned hoses from FM, and no boost leak at last.
Have changed map to a revised custom mapp written for existing modifications. Boost set to 1.2bar.
Mods:
DVs
Filter
Blown6 ICs
Cargrahic IP (70)
Custom mapp
Since many of you have modified 996tt, would be interested in 100-200 times if you have got them http://www.pistonheads.com/gassing/topic.asp?h=0&a... times.
I don't have a way of timing that other than my mate sitting in the car, me shouting start, and then stop. Not the most scientific method, but I know it is around high 6s, low 7 seconds. That is one gear (third - tiptronic), from constant 100, and then floor it.
I created a separate thread because I really don't think you can get a good enough dyno reading that can be relied upon - too many factors.
Currently planning
- hybrid k16s
- exhaust + headers ( need to do headers since I have a slight gasket leak until it warms up).
Are any of you near to Gatwick? Would like to meet with others who have modified to compare notes.
As you may have read in this thread, there are some interesting stories with different results. All I can say is that I am extremely happy with performance. I started with the standard dvs, filter and stage 1 map, then moved to ICs/IP and stage 2 map. But had the leak, but it was still quite a bit quicker.
Now it is how it should be.
996ttalot said:
Update:-
Finally got redesigned hoses from FM, and no boost leak at last.
Have changed map to a revised custom mapp written for existing modifications. Boost set to 1.2bar.
Mods:
DVs
Filter
Blown6 ICs
Cargrahic IP (70)
Custom mapp
Since many of you have modified 996tt, would be interested in 100-200 times if you have got them http://www.pistonheads.com/gassing/topic.asp?h=0&a... times.
I don't have a way of timing that other than my mate sitting in the car, me shouting start, and then stop. Not the most scientific method, but I know it is around high 6s, low 7 seconds. That is one gear (third - tiptronic), from constant 100, and then floor it.
I created a separate thread because I really don't think you can get a good enough dyno reading that can be relied upon - too many factors.
Currently planning
- hybrid k16s
- exhaust + headers ( need to do headers since I have a slight gasket leak until it warms up).
Are any of you near to Gatwick? Would like to meet with others who have modified to compare notes.
As you may have read in this thread, there are some interesting stories with different results. All I can say is that I am extremely happy with performance. I started with the standard dvs, filter and stage 1 map, then moved to ICs/IP and stage 2 map. But had the leak, but it was still quite a bit quicker.
Now it is how it should be.
I am, drop me a pm.Finally got redesigned hoses from FM, and no boost leak at last.
Have changed map to a revised custom mapp written for existing modifications. Boost set to 1.2bar.
Mods:
DVs
Filter
Blown6 ICs
Cargrahic IP (70)
Custom mapp
Since many of you have modified 996tt, would be interested in 100-200 times if you have got them http://www.pistonheads.com/gassing/topic.asp?h=0&a... times.
I don't have a way of timing that other than my mate sitting in the car, me shouting start, and then stop. Not the most scientific method, but I know it is around high 6s, low 7 seconds. That is one gear (third - tiptronic), from constant 100, and then floor it.
I created a separate thread because I really don't think you can get a good enough dyno reading that can be relied upon - too many factors.
Currently planning
- hybrid k16s
- exhaust + headers ( need to do headers since I have a slight gasket leak until it warms up).
Are any of you near to Gatwick? Would like to meet with others who have modified to compare notes.
As you may have read in this thread, there are some interesting stories with different results. All I can say is that I am extremely happy with performance. I started with the standard dvs, filter and stage 1 map, then moved to ICs/IP and stage 2 map. But had the leak, but it was still quite a bit quicker.
Now it is how it should be.
aathanas said:
Hi guys,
I just got a 996 turbo, 2000 model with around 50k miles and I have been reading all these forums for mods...i am basically looking to spend around 2k to get a remap, but I am a bit confused on which one is better / more reliable...DMS, revo, parr, fearn...weltmeister...
I would really appreciate some useful info as to what I should go for, assuming I want around 500bhp and not much turbo lag...ie more linear delivery..remap, exhaust, K24s ? I am a bit confused as to what is best and more reliable...
I am also looking to get a short shift installed as the standard shifter just has tooooo much travel..Porcshe OPC quoted me 420GBp to get it installed..Any suggestions on this please?
cheers
Fearn everytime without doubt. Not a single problem since I had mine done and my word what a reaction when you stamp on the loud pedal! Soaking wet roads, worn tyres....interesting drive!I just got a 996 turbo, 2000 model with around 50k miles and I have been reading all these forums for mods...i am basically looking to spend around 2k to get a remap, but I am a bit confused on which one is better / more reliable...DMS, revo, parr, fearn...weltmeister...
I would really appreciate some useful info as to what I should go for, assuming I want around 500bhp and not much turbo lag...ie more linear delivery..remap, exhaust, K24s ? I am a bit confused as to what is best and more reliable...
I am also looking to get a short shift installed as the standard shifter just has tooooo much travel..Porcshe OPC quoted me 420GBp to get it installed..Any suggestions on this please?
cheers
Your observations are accurate, the last 100 bhp is the most expensive, well it was for me any how. That last 100 bhp needs consideration for fuelling, additional boost and stopping power. A remap and exhaust will give you plenty of "grin factor" but proper laugh out loud by yourself grunt and I mean unimaginable grunt, you need turbos, fuelling, headers etc. Just remember, you are very unlikely to get your money back, Im considering a change at the moment but I will never get my cash back which is easily north of £9k so far!
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