Cayman S poor dyno results?
Discussion
I've got a 2008 Cayman S, I recently fitted the ipd intake pipe, 82mm ipd plenum, gt3 throttle body, bmc air filter, removed intake blanking plate and remapped the car using winol.
Still got the dyno and standard exhausts but it only pulled 302bhp and 261 ftlb
The dyno used is a 'releastic' dyno and doesn't over emerald like some I've used in the past, am I to believe a exhaust will make a huge jump in power? I've seen people getting 340-350bhp with the same mods (with a exhaust though)
My dyno
My AFR
Another chaps dyno (hope he doesn't mind me using it)
Interestingly, my dyno follows the same curve and dips as his car did standard, albeit more pronounced on his car.
opinions?
Still got the dyno and standard exhausts but it only pulled 302bhp and 261 ftlb
The dyno used is a 'releastic' dyno and doesn't over emerald like some I've used in the past, am I to believe a exhaust will make a huge jump in power? I've seen people getting 340-350bhp with the same mods (with a exhaust though)
My dyno
My AFR
Another chaps dyno (hope he doesn't mind me using it)
Interestingly, my dyno follows the same curve and dips as his car did standard, albeit more pronounced on his car.
opinions?
Yeh I know it all needs to be balanced, and I will be getting an exhaust the removes 2x cats.
I'm not new to tuning cars, but just thought I'd see what people thought about the exhaust causing such a high restriction.
Why do you think the AFR isn't right? Granted its a little conservative but it's a nice smooth AFR (as you'd expect being a wideband lamda)
I'm not new to tuning cars, but just thought I'd see what people thought about the exhaust causing such a high restriction.
Why do you think the AFR isn't right? Granted its a little conservative but it's a nice smooth AFR (as you'd expect being a wideband lamda)
edc said:
I didn't say the AFR wasn't right, but that the scaling on the graph is not very helpful. It's difficult to make out how smooth it actually is. But, that's neither here nor there as it starts in roughly the right place and finishes in roughly the right place.
Ahh yes, sorry, I misread you're post. mrdemon said:
All that extra air in , no where for it to go
That's my graph you quoted and it was real, I had the Remus.
You need to delete some cats :-) it will net you another 15bhp.
On a gen one just fittin an exhaust back box alone nets you 10 real Bhp.
I'd still be hoping for more than 315bhp with all those mods (plus the exhaust)That's my graph you quoted and it was real, I had the Remus.
You need to delete some cats :-) it will net you another 15bhp.
On a gen one just fittin an exhaust back box alone nets you 10 real Bhp.
well, with out a base line you will never have any clue what you started with on the same dyno
both mine were done on the same dyno with out the owner knowing why or what I had done 1 day after the other.
exhaust is key on the gen 1 car as it the remap, Softronic is tried and tested with these mods 40x over.
ANd with deleting the 2 rear cars the air is just got getting out.
some one went to DMS and posted a Cayman tune they netted 5bhp !!!! lol pointless.
I also did not go the ipd route and went with 996 GT3 parts, again tried and tested, so why did you buy other stuff ?
both mine were done on the same dyno with out the owner knowing why or what I had done 1 day after the other.
exhaust is key on the gen 1 car as it the remap, Softronic is tried and tested with these mods 40x over.
ANd with deleting the 2 rear cars the air is just got getting out.
some one went to DMS and posted a Cayman tune they netted 5bhp !!!! lol pointless.
I also did not go the ipd route and went with 996 GT3 parts, again tried and tested, so why did you buy other stuff ?
Unfortunately I was unable to do a base figure run :-(
Obviously, that would have been my preferred way of doing it.
I know a exhaust will help, and that's already next on the to do list.
What I was asking is that with all my current mods, am I really likely to see a 40bhp with an exhaust at this point.
I'm looking to get the remus exhaust up to now.
I went the ipd route as I thought this was tried and tested too, are you saying the genuine porsche parts yield a better power gain? (Obviously my gt3 t/b is genuine porsche/Bosch)
I got all the parts very cheap too which is also another reason.
The remap was also very cheap through a German friend that does lots of sports + prestige cars, there where changes like it's fuel pressure is up 3%. Fuel flow limiter is up. Mixture is slightly leaner and timing is a bit more aggressive, the rev limiter is up from 7210 rpm to 7468 rpm.
He also remapped my friends 325d bmw and that's got 255bhp (more than most other similar cars he's put it up against comparatively) so hopefully he knows what he is doing.
The map cost me £245, a damned sight cheaper than softronics £755 too, plus he will tweek it for free if needs be.
The AFR looks to be spot on though (as you'd expect from wideband)
Obviously if I can't get the results with his mapping I'll buy the softronic, but considering no body seems to have dynoed the car with my current set up, we can't account for what the exhaust will produce/free up.
Searching for the cheapest place for a remus now!
I'm not chasing bhp figures btw, but that's just a pretty big difference from what is hoped!
Obviously, that would have been my preferred way of doing it.
I know a exhaust will help, and that's already next on the to do list.
What I was asking is that with all my current mods, am I really likely to see a 40bhp with an exhaust at this point.
I'm looking to get the remus exhaust up to now.
I went the ipd route as I thought this was tried and tested too, are you saying the genuine porsche parts yield a better power gain? (Obviously my gt3 t/b is genuine porsche/Bosch)
I got all the parts very cheap too which is also another reason.
The remap was also very cheap through a German friend that does lots of sports + prestige cars, there where changes like it's fuel pressure is up 3%. Fuel flow limiter is up. Mixture is slightly leaner and timing is a bit more aggressive, the rev limiter is up from 7210 rpm to 7468 rpm.
He also remapped my friends 325d bmw and that's got 255bhp (more than most other similar cars he's put it up against comparatively) so hopefully he knows what he is doing.
The map cost me £245, a damned sight cheaper than softronics £755 too, plus he will tweek it for free if needs be.
The AFR looks to be spot on though (as you'd expect from wideband)
Obviously if I can't get the results with his mapping I'll buy the softronic, but considering no body seems to have dynoed the car with my current set up, we can't account for what the exhaust will produce/free up.
Searching for the cheapest place for a remus now!
I'm not chasing bhp figures btw, but that's just a pretty big difference from what is hoped!
Edited by Stelongy on Thursday 12th June 08:08
I'm lucky enough to own a Superflow 902 Engine Dyno. The discrepancy shown between the SF and the other Rolling Roads is quite typical of what we see when comparing numbers.
The worst case we saw was 181 flywheel horsepower on a well known brand of RR, which showed barely 150 on the engine dyno. The AFR chart looks fine to me, though it has been set on a wide scale to make the line a little flatter. Bear in mind that with SF kit, every parameter is logged at 100hz, so it really shows when something is out.
I have every faith that the numbers shown for power in the post above are correct. We calibrate our kit before, during and after each engine has been on the brake. To date, the largest discrepancy has been 0.4 ft/lbs on 300 ft/lbs calibration weight! I guess the best way to judge the engine in question, is to drive it and see how it feels.
The worst case we saw was 181 flywheel horsepower on a well known brand of RR, which showed barely 150 on the engine dyno. The AFR chart looks fine to me, though it has been set on a wide scale to make the line a little flatter. Bear in mind that with SF kit, every parameter is logged at 100hz, so it really shows when something is out.
I have every faith that the numbers shown for power in the post above are correct. We calibrate our kit before, during and after each engine has been on the brake. To date, the largest discrepancy has been 0.4 ft/lbs on 300 ft/lbs calibration weight! I guess the best way to judge the engine in question, is to drive it and see how it feels.
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