seventhgear

well my car is dirt slow!!!!
and im going to do the air pump mod and im wanting to do the tb mod but am scared to kuz i dont wanna f*ck up ya know? well when i do the air pump mod should i jus have someone take the 5th and 6th actuators out ?? ok well explain what those are too lol im so pissed off at my car and also another thing .... what size piping should i get for my 87 n/a ? 2.5" or 3" piping? well thanks

would porting my intake help any? jack


87 n/a
pacesetter header
apc intake

Icemark

Well before you make any more changes you should replace the Cat-back (that should have been the first mod you did after you replaced the sparkplugs, sparkplug wires, belts, all filters, all fluid, checked the timing and 5th/6th port operation).

50mm is generally the best for a NA and will retain some low end. Too big exhaust on a NA and you will loose low end on the motor.