I'm investigating the possibility of chipping my 1995 MY 968 Sport. As far as I can tell it looks like a harmless and reversible process. I might also pay some attention to the air filter and possibly the exhaust. I'm not expecting any major gains but can any of the forum members share any experiences of chipped 968's? I get the impression that there's little to be done by way of tuning to the engine but if a simple mod improves tractability a bit lower down in the rev range (and indeed increases power) it would seem like £150 well spent on chip and air filter. I've contacted Promax and 9tuning. I don't know of any other companies offering 968 chips. The testimonials from Promax look good but I can't tell how large and experienced these companies are and how much R&D backs up the remapping. Any guidance and independent views gratefully received. (I did see the thread on EES exhausts/ Chips / filters).
Promax vs. 9tuning vs. Anything else
- Thread starter henry997
- Start date
pauljmcnulty
New member
Promax are the default chip on 944s. Currently there is a thread comparing them to the more expensive 9xx chips, but I'm told they are identical.
frogisland
New member
Promax appearsto be the best value coupled with the air box mod.
Pete over at RS Barn has his hand deep inside 968 tuning. I have some of his parts and am very happy with the gains i have.
For the best result and c£300-£350 you want live mapping - and in particular Wayne Schofield - myself and another on here have visited him and he works wonders [
]
...but for value for money, Promax (i tested an earlier version of the Promax and a Promax and was happy with the results).
Generally the gains are not significant but the drivability changes quite alot, smoother delivery and some of the lumps of the power/torque curve 'ironed out'.
JP
Pete over at RS Barn has his hand deep inside 968 tuning. I have some of his parts and am very happy with the gains i have.
For the best result and c£300-£350 you want live mapping - and in particular Wayne Schofield - myself and another on here have visited him and he works wonders [
]...but for value for money, Promax (i tested an earlier version of the Promax and a Promax and was happy with the results).
Generally the gains are not significant but the drivability changes quite alot, smoother delivery and some of the lumps of the power/torque curve 'ironed out'.
JP
Big Dave
New member
AS has been said above.
The Promax chip is worth the money, BUT use it with a K+N filter or similar + air box mod, IE drill some holes in the front of the box, but if you do a search for this im sure youl find something.
Exhausts dont realy make any difference + in some cases reduce your power / torque. The only + is the lighter weight.
BUT,,
THE best way to improve the car is to get it live mapped as JP has said above, although "we" had the injectors cleaned + flow tested among other small bits...The car,,s are now in a different league...[][][][] ,,,,,BUT not the "£150 cheap way of tuning"...
The Promax chip is worth the money, BUT use it with a K+N filter or similar + air box mod, IE drill some holes in the front of the box, but if you do a search for this im sure youl find something.
Exhausts dont realy make any difference + in some cases reduce your power / torque. The only + is the lighter weight.
BUT,,
THE best way to improve the car is to get it live mapped as JP has said above, although "we" had the injectors cleaned + flow tested among other small bits...The car,,s are now in a different league...[
][][][] ,,,,,BUT not the "£150 cheap way of tuning"...
rcsalmons
New member
Paul.
Thats an interesting remark!!
I think most people know the extent of the development behind the Promax chip.....I.e. the development of their chips was made over a period of time with the guy doing it actually purchasing the relevant car for that purpose.... real world development.
What are we saying about the other more expensive chip......
Rich
pauljmcnulty
New member
Nothing other than, until there's any sort of explanation as to how it's different, it's the same chip for a different price IMO.
JP,
The RS Barn reference sounds interesting but one of your sentences confused me a bit. You say;
Pete over at RS Barn has his hand deep inside 968 tuning. I have some of his parts and am very happy with the gains i have. For the best result and c£300-£350 you want live mapping - and in particular Wayne Schofield - myself and another on here have visited him and he works wonders"
Since RS Barn is in PA, do you live there too or is there a UK RS Barn Franchise? Were you referring to Live mapping at RS Barn ? (I'm assuming that live mapping is re-mapping whilst the car is on a rolling road). Perhaps you are saying that RS Barn products are very good, you have bought some and had them shipped over to the UK. Not sure who / where you had the live mapping carried out. Please clarify if you can.
Henry
The RS Barn reference sounds interesting but one of your sentences confused me a bit. You say;
Pete over at RS Barn has his hand deep inside 968 tuning. I have some of his parts and am very happy with the gains i have. For the best result and c£300-£350 you want live mapping - and in particular Wayne Schofield - myself and another on here have visited him and he works wonders"
Since RS Barn is in PA, do you live there too or is there a UK RS Barn Franchise? Were you referring to Live mapping at RS Barn ? (I'm assuming that live mapping is re-mapping whilst the car is on a rolling road). Perhaps you are saying that RS Barn products are very good, you have bought some and had them shipped over to the UK. Not sure who / where you had the live mapping carried out. Please clarify if you can.
Henry
Big Dave
New member
Henry.
Ill let JP talk about the RS Barn bits,, BUT all there stuff comes from the US , there isnt a "dealer" in the UK.. JP is in the UK..Not the USA. And had all the bits shipped over.
When we talk about "live mapping" its on a rolling road , so yes your correct, its done "live".
We had ours done by Wayne Schofield at Chip Wizards at,,,http://www.chipwizards.co.uk/9.html
He certainly knows his stuff about these cars + would reccomend him to anybody want to extract the best from there car...
Ill let JP talk about the RS Barn bits,, BUT all there stuff comes from the US , there isnt a "dealer" in the UK.. JP is in the UK..Not the USA. And had all the bits shipped over.
When we talk about "live mapping" its on a rolling road , so yes your correct, its done "live".
We had ours done by Wayne Schofield at Chip Wizards at,,,http://www.chipwizards.co.uk/9.html
He certainly knows his stuff about these cars + would reccomend him to anybody want to extract the best from there car...
paulf968
New member
all good stuff BUT what is the underlying condition and output of your engine?
if it currently makes 235bhp or more it is a good one, go ahead and chip it etc etc -- however it is not uncommon to have a power output well below 235 bhp, IMO in that case forget the chip etc and get the engine sorted (ie probably needs a head job for which you should budget up to £1000 at a good indie). Then the tuning stuff can be added to the now 'sound' basic engine and it will fly along.
if it currently makes 235bhp or more it is a good one, go ahead and chip it etc etc -- however it is not uncommon to have a power output well below 235 bhp, IMO in that case forget the chip etc and get the engine sorted (ie probably needs a head job for which you should budget up to £1000 at a good indie). Then the tuning stuff can be added to the now 'sound' basic engine and it will fly along.
frogisland
New member
Well spotted Paul....we're too keen to mod sometimes (you would be proud of some of the parts we pulled out of the hat for the e30's....and still within regs).
Yes, my parts came from RS Barn in US. I bought a used head from a breakers (in the US) and then had Pete at RS Barn do some work on it, he then shipped it over. Have a few other parts from him including high lift cams. Also have one of his lightweight flywheels and a (very) heavy duty clutch. The flywheel (figures from memory and someone may correct me) is 18lbs vs the 13lbs of the Fidenza that Paul uses in the race car - a little more user friendly in a road/track car. Standard is about 29lb. The factory 968 turbo flywheel was 18lbs also. 9m do a rather nice reproduction of it in steel.
Bought most of the parts when the exchange rate was well over $2 to the £ so made economic sense at the time.
Coupled with a couple of other 'tweeks'plus the live mapping by Mr Schofield (in the UK) my car has just short of 270bhp with quite a healthy power/torque curve.
JP
Yes, my parts came from RS Barn in US. I bought a used head from a breakers (in the US) and then had Pete at RS Barn do some work on it, he then shipped it over. Have a few other parts from him including high lift cams. Also have one of his lightweight flywheels and a (very) heavy duty clutch. The flywheel (figures from memory and someone may correct me) is 18lbs vs the 13lbs of the Fidenza that Paul uses in the race car - a little more user friendly in a road/track car. Standard is about 29lb. The factory 968 turbo flywheel was 18lbs also. 9m do a rather nice reproduction of it in steel.
Bought most of the parts when the exchange rate was well over $2 to the £ so made economic sense at the time.
Coupled with a couple of other 'tweeks'plus the live mapping by Mr Schofield (in the UK) my car has just short of 270bhp with quite a healthy power/torque curve.
JP
kenwill
Member
Hi guys
When they do the live remap I assume they put in their own 'chip' and then tune with a lap top. Do they still rasie the rev limit....as the Promax does (7100 or 7700) ? I have the Promax fitted along with the KN filter/Air box mod and a head refurb (which I must say was expensive but you can feel the difference) I think for the money the Promax is good value, does vary the power bands but, the increase in revs also makes it feel like you have more.
I asked Pete as RSBarn if his chips would be okay on UK cars because the US models had different emmision rules when made....and wasn't sure from his reply.
Anybody used any other 'tuners' further down the country ? Wayne sounds like the first choice guy but from Sunny Sussex he's half way to Iceland
Ken
When they do the live remap I assume they put in their own 'chip' and then tune with a lap top. Do they still rasie the rev limit....as the Promax does (7100 or 7700) ? I have the Promax fitted along with the KN filter/Air box mod and a head refurb (which I must say was expensive but you can feel the difference) I think for the money the Promax is good value, does vary the power bands but, the increase in revs also makes it feel like you have more.
I asked Pete as RSBarn if his chips would be okay on UK cars because the US models had different emmision rules when made....and wasn't sure from his reply.
Anybody used any other 'tuners' further down the country ? Wayne sounds like the first choice guy but from Sunny Sussex he's half way to Iceland
Ken
paulf968
New member
Wayne starts by sticking one of his chips in, you can get him to give you any rev limit you like! Then he runs it all up on the dyno, checking and refining fuel ratios to give optimum performance throughout the range. That is it really, seems to take ages though to strap the car in place, undo ECU's and then lots of noisy power runs.
I have not heard of anyone else in the UK that has such a reputation on 968's but did hear that West Tuning at Thruxton circuit have a useful guy and they do look after one of the racing 968's - so should know their stuff. Lot closer to you!
I have not heard of anyone else in the UK that has such a reputation on 968's but did hear that West Tuning at Thruxton circuit have a useful guy and they do look after one of the racing 968's - so should know their stuff. Lot closer to you!
kenwill
Member
Hi Paul
Thanks for that I'll make a phone call. So where do most people set the rev limiter ? I now Pomax have 7100 and 7700 I have the 7100 and have on occasions hit the rev limiter especially at Brands last year.
As I understand live remapping your simply using up some of the safety margin Mr Porsche built in to the design to stop all his nice new 968s blowing up on the road. I have seen on the RS Barn site that they quote figures at 7200rpm...so they must set the rev limiter well above that.
Ken
Thanks for that I'll make a phone call. So where do most people set the rev limiter ? I now Pomax have 7100 and 7700 I have the 7100 and have on occasions hit the rev limiter especially at Brands last year.
As I understand live remapping your simply using up some of the safety margin Mr Porsche built in to the design to stop all his nice new 968s blowing up on the road. I have seen on the RS Barn site that they quote figures at 7200rpm...so they must set the rev limiter well above that.
Ken
paulf968
New member
I have stuck to the 7100 limit and it is certainly helpful on occasions when the std chip might require an upchange. I did here that some of the US guys say the engine is good for 8000 without any mods! uumm not going to be testing that one out myself!
There has also been lots of discussion here and elsewhere about the real benefit of upping the rev limit when the peak torque remains in a similar place around 4500 to 5000rpm -- ie there really is no point in pushing the engine so far away from peak torque as the area under the torque curve will become smaller, so you will be slower! NB Mind you if you could drop the final drive ratio, then higher rev limits begin to make a lot more sense - anyone done it on a 968?
There has also been lots of discussion here and elsewhere about the real benefit of upping the rev limit when the peak torque remains in a similar place around 4500 to 5000rpm -- ie there really is no point in pushing the engine so far away from peak torque as the area under the torque curve will become smaller, so you will be slower! NB Mind you if you could drop the final drive ratio, then higher rev limits begin to make a lot more sense - anyone done it on a 968?
frogisland
New member
Another can of worms this, depending on the setup that i have had, i have mangaed to pull max power at both approx 6200 and 6800, max torque is usually around 4100...but have had one setup when i reduced slightly the max torque and then had two peaks at 4000 and 5100 with a slight dip between.
Also generally found that the Promax chip produced better results below 4100 and the RS Barn chip post 4100. Interestingly, maximum torque was achieved on a standard chip - it was delivered in quite a spike though, and although my max torque is down slightly now it is much flatter across the rev range. Really need to have my car rolling roaded at 9m so that i can overlay the latest setup they have with the various profiles they have of my car.
JP
Also generally found that the Promax chip produced better results below 4100 and the RS Barn chip post 4100. Interestingly, maximum torque was achieved on a standard chip - it was delivered in quite a spike though, and although my max torque is down slightly now it is much flatter across the rev range. Really need to have my car rolling roaded at 9m so that i can overlay the latest setup they have with the various profiles they have of my car.
JP
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