Joined
·
2,110 Posts
I just got my car back from the dyno today. Couple of things worth mentioning before the numbers.
(1) As the engine has only 1,000kms after the build up, Top Secret didn't take the power run beyond 8,000rpm (even though I wanted them to). Consequently, I only have the dyno results as at 8,000rpm (although the curve is clearly still going up). After I add more kms a second stage tuning session will occur.
(2) The dynoing was done on pump gas only. After all, this is my daily driver and everyday performance numbers are most important to me. When I start doing some drag racing (next season), the engine will be tuned for race gas with more boost. :smokin:
(3) The relevant environmental details are as follows:
Ambient Temp: 25 degrees C (intake temp was 27 degrees C)
Barometric Pressure: 1019 hPa
Fuel: 98 RON (pump gas)
Tyres: 275/35/18 (slipping a little on the rollers, unfortunately)
Air/Fuel ratio at 8,000rpm: 10.8:1 (in the interests of reliability)
RESULTS (at wheels):
Power @ 1.8 kg/cm2 (25.6 psi): 796.3 ps @ 8,000rpm
Torque @ 1.8 kg/cm2 (25.6 psi): 80.2 kgm @ 7,500rpm
Given the differing views on converting rear wheel dyno numbers into engine power estimates, I'll let each person make their own conclusion.
How does it go? Well, the car almost drives like factory in terms of stop and go traffic, etc. When you put the hammer down, nothing exciting happens until after 5,500rpms. Then its just plain scary. Although I'm only running low boost at the moment (1.4 - 1.5 kg/cm2), I can see that it's going to take some time getting comfortable with this much power. The delivery is simply relentless in the upper rev range.
Cya O!
[Edited for boost conversion correction]
(1) As the engine has only 1,000kms after the build up, Top Secret didn't take the power run beyond 8,000rpm (even though I wanted them to). Consequently, I only have the dyno results as at 8,000rpm (although the curve is clearly still going up). After I add more kms a second stage tuning session will occur.
(2) The dynoing was done on pump gas only. After all, this is my daily driver and everyday performance numbers are most important to me. When I start doing some drag racing (next season), the engine will be tuned for race gas with more boost. :smokin:
(3) The relevant environmental details are as follows:
Ambient Temp: 25 degrees C (intake temp was 27 degrees C)
Barometric Pressure: 1019 hPa
Fuel: 98 RON (pump gas)
Tyres: 275/35/18 (slipping a little on the rollers, unfortunately)
Air/Fuel ratio at 8,000rpm: 10.8:1 (in the interests of reliability)
RESULTS (at wheels):
Power @ 1.8 kg/cm2 (25.6 psi): 796.3 ps @ 8,000rpm
Torque @ 1.8 kg/cm2 (25.6 psi): 80.2 kgm @ 7,500rpm
Given the differing views on converting rear wheel dyno numbers into engine power estimates, I'll let each person make their own conclusion.
How does it go? Well, the car almost drives like factory in terms of stop and go traffic, etc. When you put the hammer down, nothing exciting happens until after 5,500rpms. Then its just plain scary. Although I'm only running low boost at the moment (1.4 - 1.5 kg/cm2), I can see that it's going to take some time getting comfortable with this much power. The delivery is simply relentless in the upper rev range.
Cya O!
[Edited for boost conversion correction]
