I have an 89 IROC with tpi and a t-5. Recently had a fuel pump installed and now the car bogs down at wide open throttle, popped the hood to check it out and i don't have a maf, crazy i know but the car just runs in open loop now. Also, the car has two fuel pumps, one in the engine bay thats aftermarket from the TPI swap and then the new 50 psi pump in the tank. Would to much fuel pressure cause the car to bog down or is it like an ecm malfunction or TPS problem, i will try to set the TPS at .54 today if it's not already there, but any suggestions will help, i'm looking for a maf core so i can buy a rebuilt one, if anyone has an extra on here i will gladly purchase it thanks much