[myskyon]

as the title states my 87 951 hesitates at any psi above 10. as far as mods go: LR 3" turbo back, MAF / mafterburnner, 3bar FRP, boost gage, boost controller, spec stage 2 clutch, LR hard pipes, msd blaster coil. and i just recently replaced the brake booster and line to it also with the lines for the idle stabilizer. i have gone over all of my vacuum line and cannot find a leak anywhere. i have also just replaced the plugs to Bosch platinums. i don't know what could cause this. i hear what sounds like air on the passenger side of the intake manifold but i cant find a leak anywhere? could it be the manifold was not tighened down all the way? the engine was replaced not too long ago and this is the second to last problem i have to fix since i got it back from the butcher shop.i am about to take it to the dealer to see if they can find the problem. but i don't want to spend that kind of money.please help. if you need more info i can get it for ya too. oh BTW my A/F gage sometimes reads only lean but mostly reads good. depending on the weather.