Modification Help

[Notlad]

so i had a 98 gst which got taken, to make a long story short i bought a new 99 gst and i dont want to make the same mistakes i did last time. i know its probly out there and i have been looking but what mods do i need to run a 16g? my 14b is going out and i figured its time for an upgrade. right now i have boost gauge wideband afr gauge, short shifter, FMIC, Greddy IC piping, Greddy S type BOV, stage 2 clutch, NGK wires and plugs gapped .028, rear camber kit, lowering springs, apexi n1 DP with full Apexi exhaust and straight piped. my ? is what am i missing mod wise that wont require a tune and also what do i need to support a 16g. i have a MBC just not installed yet. my other ? is should i get a highflow cat or keep straight piped. thank you.

i also have a push start button and a Greddy turbo timer.

 

[welfle18]

well first and foremost I am going to tell you what others are going to tell you is that you need to search to find answers like this. Second if you are gonna run that 16g and have fun with it you are gonna need at the very least a 190 fuel pump, say some 650cc injectors, and some way to tune the fuel properly with say a safc. On the stock fuel system you are only going to be able to run 15psi before fuel cut becomes an issue. If it were me personally I would go large with 255, 1000ccs, afpr, rewire and dsmlink. I ran this before I ever thought about changing turbos, so that when I did change I could go large if I wanted or midframed. You get the idea. Also I dont know if you changed your turbo to a 14b but if not you have the t25.