Porsche Rolling road II
Discussion
Guys,
Good to meet you all and thanks you supporting the event everyone seemed to go away happy. Although I never did get a proper run on my car. For those that don't know the problem was to do with the PSM cutting in near the end of the run (trying to bounce the car off the rollers in the process). A problem G-Force has only seen on one other 996TT. They are going to try and find a solution then invite me back again. But I'm happy with all the other data LAMDA, TORQUE, BOOST PRESSURE etc. It seems pretty clear that the car was healthy, making at least standard power maybe a bit more from aborted runs which read 404bhp with quite a few RPM to go.
I'll post the rest of the guys figures later. They were all pretty much on the dot. Apart from Ian who discovered a few extra horses lurking around...
Cheers, Steve, 996TT
Good to meet you all and thanks you supporting the event everyone seemed to go away happy. Although I never did get a proper run on my car. For those that don't know the problem was to do with the PSM cutting in near the end of the run (trying to bounce the car off the rollers in the process). A problem G-Force has only seen on one other 996TT. They are going to try and find a solution then invite me back again. But I'm happy with all the other data LAMDA, TORQUE, BOOST PRESSURE etc. It seems pretty clear that the car was healthy, making at least standard power maybe a bit more from aborted runs which read 404bhp with quite a few RPM to go.
I'll post the rest of the guys figures later. They were all pretty much on the dot. Apart from Ian who discovered a few extra horses lurking around...
Cheers, Steve, 996TT
Steve,
Many thanks for your organisation on this, it was greatly appreciated by all present.
I am still trying to work out where all the extra power came from, as everything is supposed to be completely standard....
Let us know when you are going back and I will pop over to see your final run.
Cheers,
Ian D
Many thanks for your organisation on this, it was greatly appreciated by all present.
I am still trying to work out where all the extra power came from, as everything is supposed to be completely standard....
Let us know when you are going back and I will pop over to see your final run.
Cheers,
Ian D
Thanks for organising. Please to see 395bhp at the fly for my bog standard Tiptronic 996TT.
Share the positive sentiment on Chris - a knowledgeable, considered and un-flustered type that clearly loved the marque.
Trip to motor show following rolling road a bit of a disappointment. Too many people. Porsche stand one of the biggest Carrerra GT looks sexy as hell. Bagged a test drive next month in the new Farbound GTS – very F360 ish but with a 440 BHP 2.8 Audi twin turbo and 500KG less than a 996 Turbo – basically a Noble M12 style track car but seemed better made. Should be interesting.
Share the positive sentiment on Chris - a knowledgeable, considered and un-flustered type that clearly loved the marque.
Trip to motor show following rolling road a bit of a disappointment. Too many people. Porsche stand one of the biggest Carrerra GT looks sexy as hell. Bagged a test drive next month in the new Farbound GTS – very F360 ish but with a 440 BHP 2.8 Audi twin turbo and 500KG less than a 996 Turbo – basically a Noble M12 style track car but seemed better made. Should be interesting.
Drum roll...The following figures were posted by the following cars -:
Ian-Dorrian 993C4S 297.5
Aceparts-com 993TT 393.2
Cyrus 996TT (trip) 395.6
Phelix 993TT 396.1
ME 996TT 4??.?
GuyR 996GT2 458.9
Sorry I've only got the bhp figures but G-Force supplied 4 graphs for each run showing thing like boost pressure and Lamda output. I'm sure the guys would be happy to share their data if anyone has any specific questions.
Cheers, Steve, 996TT
P.S. I'll post my figures if / when I finally get a clean run.
Ian-Dorrian 993C4S 297.5
Aceparts-com 993TT 393.2
Cyrus 996TT (trip) 395.6
Phelix 993TT 396.1
ME 996TT 4??.?
GuyR 996GT2 458.9
Sorry I've only got the bhp figures but G-Force supplied 4 graphs for each run showing thing like boost pressure and Lamda output. I'm sure the guys would be happy to share their data if anyone has any specific questions.
Cheers, Steve, 996TT
P.S. I'll post my figures if / when I finally get a clean run.
Hi Ultraviolent,
I have put scans of the dyno runs up on my btopenworld account.
The car is a bog standard 1996 993 C4S with 48k on the clock.
No exhaust mods (yet), no induction mods...but we suspect it may have been chipped as Chris has never seen more than 294bhp at the flywheel of an unmolested 993 vario.
http://uk.f2.pg.photos.yahoo.com/ph/ian.dorrian@btopenworld.com/my_photos
PS if anyone knows what the standard chip looks like (serial numbers etc) can you post the info before I open up the ECU. I didn't get any paperwork evidence of a chip when I purchased the car in March but it is very unlikely that an extra 15bhp would have slipped unnoticed past the Stuttgart QC bods.
I guess the insurance man needs to know if it has been chipped as I can't risk them wriggling out of paying if the worst should ever happen.
I have put scans of the dyno runs up on my btopenworld account.
The car is a bog standard 1996 993 C4S with 48k on the clock.
No exhaust mods (yet), no induction mods...but we suspect it may have been chipped as Chris has never seen more than 294bhp at the flywheel of an unmolested 993 vario.
http://uk.f2.pg.photos.yahoo.com/ph/ian.dorrian@btopenworld.com/my_photos
PS if anyone knows what the standard chip looks like (serial numbers etc) can you post the info before I open up the ECU. I didn't get any paperwork evidence of a chip when I purchased the car in March but it is very unlikely that an extra 15bhp would have slipped unnoticed past the Stuttgart QC bods.
I guess the insurance man needs to know if it has been chipped as I can't risk them wriggling out of paying if the worst should ever happen.
aceparts_com said:
Cheers Steve!
Thanks for organising a grand day out - sorry your luck was a bit off again!
My 993 Turbo recorded 325 bhp at the rear wheels and a max 450lb ft of torque. It seemed that all the cars were slightly down on power by 2-3% possibly caused by heat build up in the cell?
The torque figure is well up; supposed to be 398 as standard I think.
Nice one!
I can only put that down to the Techart exhaust that was fitted (apparently) from the factory.
When driving the car it almost feels like you need to be changing gear at about 5,000 because of the enormous surge from 3,500 to 5,000 rpms.
I might in future look at ways of increasing the top end power.
I'll host the graphs tomorrow for evaluation.
When driving the car it almost feels like you need to be changing gear at about 5,000 because of the enormous surge from 3,500 to 5,000 rpms.
I might in future look at ways of increasing the top end power.
I'll host the graphs tomorrow for evaluation.
I can only put that down to the Techart exhaust that was fitted (apparently) from the factory.
When driving the car it almost feels like you need to be changing gear at about 5,000 because of the enormous surge from 3,500 to 5,000 rpms.
I might in future look at ways of increasing the top end power.
I'll host the graphs tomorrow for evaluation.
When driving the car it almost feels like you need to be changing gear at about 5,000 because of the enormous surge from 3,500 to 5,000 rpms.
I might in future look at ways of increasing the top end power.
I'll host the graphs tomorrow for evaluation.
I can only put that down to the Techart exhaust that was fitted (apparently) from the factory.
When driving the car it almost feels like you need to be changing gear at about 5,000 because of the enormous surge from 3,500 to 5,000 rpms.
I might in future look at ways of increasing the top end power.
I'll host the graphs tomorrow for evaluation.
When driving the car it almost feels like you need to be changing gear at about 5,000 because of the enormous surge from 3,500 to 5,000 rpms.
I might in future look at ways of increasing the top end power.
I'll host the graphs tomorrow for evaluation.
So Steve, to remind you of your question from a while back...
"Having recently just brought my 996 turbo, I was planning to get it rolling roaded to check all was well."
The answer seems to be a definite YES....
And we wondered where my extra 15bhp came from.
Hope you are pleased !
Ian D
"Having recently just brought my 996 turbo, I was planning to get it rolling roaded to check all was well."
The answer seems to be a definite YES....
And we wondered where my extra 15bhp came from.
Hope you are pleased !
Ian D
Ian,
Yep, chuffed. The car should be 420bhp out of the box, the exhaust gives 20bhp. So I'm left with an extra 20bhp from somewhere. Everything else is standard even the air filter. Boost pressure is standard. It's weird, it probably explains why it uses so much fuel (14mpg with a max of 21mpg) compared to other 996 turbos though. All the figures at the bottom of the graph are pretty similar too temp, humidity, atmos. So it's probably a fair test.
Steve, 996TT
Yep, chuffed. The car should be 420bhp out of the box, the exhaust gives 20bhp. So I'm left with an extra 20bhp from somewhere. Everything else is standard even the air filter. Boost pressure is standard. It's weird, it probably explains why it uses so much fuel (14mpg with a max of 21mpg) compared to other 996 turbos though. All the figures at the bottom of the graph are pretty similar too temp, humidity, atmos. So it's probably a fair test.
Steve, 996TT
Don't want to pi$$ on anyones chips here, but G force rollers are known within the industry to overread a tad, so the extra 20bhp found on the turbo is the sort of extra bhp often described as the g force effect.
Yes you can't compare rolling road vs rolling road etc etc & its really only good as a base to then go back to after mods, however I wouldnt take G force figures as gospel, Bob Watsons rollers on the other hand are known to be a fair bit more realistic.
Yes you can't compare rolling road vs rolling road etc etc & its really only good as a base to then go back to after mods, however I wouldnt take G force figures as gospel, Bob Watsons rollers on the other hand are known to be a fair bit more realistic.
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