|
That's Bill's car. It has the very first supercharger kit I ever sold. I am glad to see it's still running. Although it would appear it's a little weak, that's really not the case.
I just spoke with Bill over the phone. He was a bit surprised to find out there was a dyno video of his car. I suspect it was put up by the dyno shop to attract attention to the shop, not to show what the car can do.
Anyway here is the scoop on the seemingly low power numbers. This session was simply the first time he ran the car with the intercooler installed and the new engine management system. All they were doing was dialing in fuel. The low power numbers are due to the following reasons. I am sure you will see much higher numbers from this car soon.
1. Low boost during initial testing at about 4.5 psi.
2. Ignition timing way off as evidenced by the really jagged lines. When the timing is off just 2 or 3 degrees it will easily rob 20rwph on a supercharged motor. I have personally seen higher values knock off 50rwhp! They didn't have time to mess with ignition.
3. The normal dyno operator was not there and those numbers are not corrected for temperature. At the time of this run it was 93F.
4. The dyno used is a Dyno Dynamics unit. These are almost always the lowest reading dynos. Additionally the eddy current (whatever the heck that is) wasn't set on the dyno because the guy that knows how to do that wasn't there. Of course they didn't care because were just dialing in fuel anyway.
5. As the big Swede pointed out, really big tires knock down the numbers.
I am confident we will see 260-270rwhp from this car soon.
Last edited by Greg Gordon; 10-03-2007 at 01:46 PM.
|
Quote:
Linear Mode
