ok, so if i am getting this correct Intake, great + hp mod and easy/cheap Programmer, needed and good hp pulleys, easy cheap good hp Axle back = sound only ( mostly) mid pipe, good but not huge gains Headers, only worth doing long tubes throttle body?? high output coil packs??? ( more for nitrous and FI cars?) cat back exhuast > axle back ?? ( i know the factory pipes are not that bad Drive shaft???? = good but expensive ??? ( best price i have seen is 500) Delete plates ???? please more info ? looks like a second throttle body kinda of any other bolt ons i missed? other than big stuff like cams and heads ...........
throttle body = junk. dont waste your time. guys have over 800 hp with stock one. most people also have trouble with them and end up junking them. coil packs = more for forced induction, correct. have not seen any N/A sheets that showed any gains. cat back = waste of money driveshaft = good gains. spydershaft is inexpensive and reliable.
Coil packs are only needed if you are having spark blowout issues, which can happen at higher boost levels. The only time I think that might happen NA is if you're running really high compression (12/1+) with way advanced timing (race fuel). Dan
