What about the injectors? I have been wanting to change them because the car has always seemed under powered. I was wondering if they would also be causing my problem? Do these style of injectors hold back some psi? I have an old set from our parts car and some I can blow air thru and some I can't. I thought they were plugged but, now I'm wondering if the are like diesel or new style of injectors were the psi is there until it reaches a certain pressure then realeses. I don't think I have a bleed off problem because after the car sits I can push down on the air meter plate and feel resitance not alot but some. Oh well just thinking maybe its time to take it to somebody who knows.