Okay, most of you know that my car is running stock internals and that I'm on my third iteration of turbo piping and now doing my own tuning.
I've been talking about how fast it was and how fun to drive and due to the fact that I may be selling this car soon, I decided to give it a few dyno runs.
The only negative about the dyno runs is that while the dyno operator was running the car, and I was video taping the runs, I realized that my cheap ball and spring boost controller is not working like it should. So I'm runnin a 3.83psi spring in my wastegate, which is pretty small, but then I'm cranking the boost up with the ball and spring controller. I was going to dyno at 12psi today but it turns out the the controller will spike up towards 12 for a second then it drops back down to somewhere between 0.6 and 0.7 bar pressure. I kept turning the spring up and even though it would seem to make a small improvement, the pressure kept settling back to right about the same, 0.6-0.7bar range. That's around 10 psi for you Folks who are challenged By SI units!
So I don't know whats's wrong with the ball and spring, but maybe its time I either make a better one or get off my but and buy a real dual stage boost controller! It would have been a much better day because I was running lower pressure than I wanted, AND I was running rich above 5600rpm. A real safe fuel level, but I'm loosing probably 15-20 HP in the top end because of it.
Oh yes, the results!! On a standard day like today 68F 30 inHG, 8-10% humidity ---- yes yes, back to the results.
356 wHP/334 wTQ
Then on run number 5 (in a Twenty Minute time span), I pulled off the ball and spring controller and did one on the stock wastegate pressure which is 3.83 (rated) but after an intercooler pressure drop of around 0.5psi it is about 3.33psi:
250wHP/220wTQ
So I'm pretty happy on my stock pistons and rods that can't take 300 crank HP!
The honest prediction with the Air Fuel leaned out a bit on top woiuld be around 370 wHP and with the 12psi I wanted to run it is estimated to be around 385-390 wHP. I wanted to run 14psi but I won't do that until I get a successful run at 12psi......
14psi is expected to be comfortably over 400 wHP but hey, talk is cheap right?
you can have a very respectable car and not be concerned about blowing your motor.
