05-23-2014, 01:01 PM #1
Champion Motorsport before and after GIAC 991 Turbo ECU tune 1/4 mile dragstrip results
Champion Motorsport took their 991 Turbo project car to the PBIR (Palm Beach International Raceway) dragstrip in Florida back in December to lay down some stock runs. As this was back in the winter the temperature was fairly cool for Florida in the 60 degree range and Champion managed a 10.939 @ 126.090 completely stock with launch control. Since then Champion Motorsport added the new GIAC 991 Turbo ECU tune software to the car.
Champion went back to the strip with the only difference being the software and in warmer weather managed a 10.534 @ 129.35. This is an improvement of 4/10's in elapsed time and just over three miles per hour. That is about exactly what it should be considering the GIAC quoted power improvement of 33 horsepower at the wheels and 60 lb-ft of torque at the wheels.
There should be more in the car in better conditions but the ECU tune is definitely making a difference somewhere other than the dyno.
05-24-2014, 07:42 AM #2
I still think the stock car has some weird gearing or something awry above 60 mph or so... the stock car should be doing 130+ and sub 10.5 with a tune, at least given this PDK and power / torque levels at 3530 lbs...
0 - 60 mph 3.0 s
60 - 100 mph 3.7 s
100 - 130 mph 3.8 s
but is seems to go
0 - 60 mph 3.0 - 3.3 s
60 - 100 mph 3.8 - 4.1 s
100 - 126 mph 3.8 - 4.3 s = 10.9x s quarter mile stock, 10.5x tuned
which makes it slower 60 - 100 mph than a similarly powered 996 Turbo X50 and around a similar trap as a stage 2 996 X50 or even K16 car with tune
996 X50 Turbo with Giac tune and exhaust
0 - 60 mph 3.8 - 4.1 s
60 - 100 mph 3.6 - 4.4 s
100 -130 mph 4.0 - Xx s
Given the extreme shifting advantage of the PDK (worth 1-1.5 seconds on a 0 to 60 mph versus 6MT) surely this must be worth a variable 100-150 hp advantage at similar weights
05-24-2014, 11:05 AM #3
I think the tune is just aggressive and pulls timing. That is my opinion.
05-24-2014, 12:35 PM #4
05-24-2014, 12:35 PM #5