Okay, so after having the car for about a week, I realized it really didn't have any power. At all. That was back in April. I have a 91 Daytona, 2.5L Turbo motor. When I put my foot down in 1st or 2nd, the car would shake pretty violently, was far from putting my head back in my seat, etc. It was pretty bad. Along with that, the boost gauge was only registering about 2.5 psi, although I could sometimes get it to go above 2.5, but that was only after I replaced the fuel filter in the back and ran it on 91 octane, I've been running it on 87 the whole time I've had it with one exception. Even free reving the engine in neutral in place, as far as I remember, never being able to get it over about 4 psi on the guage.
Anyway, my dad and I after some tooling and looking around, figured the motor was probably not timed correctly, and after checking everything up, we figured out the cam was one tooth counterclockwise off. We corrected that problem tonight, and now when I free rev the motor it easily goes over 5, I got it over 7 too. When I drove it, it felt like it was faster, more confident and less likely to stall. But while driving, it would not go above 5 psi of boost, even in 1st gear and flooring it, and then it would continue to drop down to around 2.5 psi slowly from there, with continued throttle being held pretty far down.
So it's running better now, but my question is what is going on with my motor? Is it not boosting up to 7 psi because I am only running 87 octane and the knock sensor is keeping it from boosting any higher than that? Or is there something wrong with my wastegate or computers? I talked to my friend who knows a bit about turbos, and he said it might be my wastegate is stuck open or is sticky and not opening like it should. Could this also be an issue with my vehicle? Thanks in advance. Oh, and I also adjusted the distributor, which was really advanced since the time I got the car, probably to compensate for it being a tooth off. I think I have it about right, but I'm not sure.