991.2 Turbo S 200 cell Kline exhaust testing .10.41@131.3mph!
Hey guys wanted to do some good testing on my .2 Turbo S with the 200 cell Kline exhaust now that the air has finally cooled off in SC. For this test the DA was a very nice -200 ft because I'm near sea level and it was 56 degrees this morning here.Ran her with pump 93 octane, 1/2 tank and tire pressures 35/42 cold , stock N1 P zero, aero retracted car in sport plus, PSM in sport mode not off (the .2 is fastest on a non prepped surface in the new sport mode it seems). As usual this is my zero slope road testing road. Here are the verified vbox logs. Will be adding Kline manifolds in the next few weeks and will retest as always in the same location with as close to neutral DA as I can make it.
The results are stunning!
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Joined: Mar 2004
Posts: 343
From: Down by the river in a van...
Rep Power: 44
What were your results in "pure" stock form before changes?
Curious to see those numbers!
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Registered User
Joined: Feb 2016
Posts: 107
From: Charleston
Rep Power: 33
i posted them in an earlier thread , as expected the car adapted to the exhaust and the peak power hasn't changed much up top , just a bit more in the midrange By butt dyno and likely lower EGT . 10.49 - 10.6 @ 130.0 - 131.0 ( so .08 - .1 and .3 -1 mph trap slower in the 1/4 mile . The half mile has been 2 mph faster consistently 156 to 158-159 with the exhaust probably due to lower EGT . I expect only a minimal further increase when I add manifolds until it is tuned obviously . The sound delta is massive and why I replaced the exhaust without a tune being available . This new ECU does a great job of keeping performance equal over a wide range of temps and conditions which is good , but bad if you expect just an exhaust to add significant performance, IMHO .
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Joined: Mar 2016
Posts: 27
From: Quebec
Rep Power: 12
My very first run at the strip with my Stock 991.2 Cabrio, heavy, as it's loaded with all options and 5/8 tank of gas and me, 235 lbs driver got me a 10.58 at 129.1 mph with 1.49- 60ft. Tires were ar 35 F 38 R.
Second run I lowered tire pressure to 32F 32R and spun badly off the line.
I returned a few times playing with tire pressure from 30 to 35 but could not duplicate the 60ft time with a best of 10.9 at 130.4 mph and a spinning 1.68 - 60 ft.
My Track is now closed, but I realize the stock Pirelli may prefer higher pressure to launch well ?
I'll go back in the Spring to get a better Stock #, before the mods
Second run I lowered tire pressure to 32F 32R and spun badly off the line.
I returned a few times playing with tire pressure from 30 to 35 but could not duplicate the 60ft time with a best of 10.9 at 130.4 mph and a spinning 1.68 - 60 ft.
My Track is now closed, but I realize the stock Pirelli may prefer higher pressure to launch well ?
I'll go back in the Spring to get a better Stock #, before the mods
Registered User
Joined: Mar 2016
Posts: 27
From: Quebec
Rep Power: 12
Napierville Dragway, Québec, Canada
Car had 2.3K miles on it, weight 3,750 + 235 lbs driver = 3,985
Just dreaming what a lightly optionned Coupe with a small driver (about 300 lbs less) could do, Under the right conditions ?
Car had 2.3K miles on it, weight 3,750 + 235 lbs driver = 3,985
Just dreaming what a lightly optionned Coupe with a small driver (about 300 lbs less) could do, Under the right conditions ?
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Registered User
Joined: Feb 2016
Posts: 107
From: Charleston
Rep Power: 33
awesome thanks ! What were the temperatures at the track ? Yeah I find it launches better with higher pressures , 35/41 cold , at least on non prepped surfaces where I have tested mine . I would expect a coupe to be up to a couple tenths quicker and have about a mph more trap speed based on the extra weight .
Registered User
Joined: Mar 2016
Posts: 27
From: Quebec
Rep Power: 12
awesome thanks ! What were the temperatures at the track ? Yeah I find it launches better with higher pressures , 35/41 cold , at least on non prepped surfaces where I have tested mine . I would expect a coupe to be up to a couple tenths quicker and have about a mph more trap speed based on the extra weight .
Temp was about 55F but very humid, I could only do 2 runs and then it started raining.