im gettin ready for turbo buyin parts ill need right now i got an aem fuel rail, skunk2 IM, exhaust, next im lookin at the s2 tb but cant seem to find a good size for the car because i was reading too big or too small can hinder the performance. i know the 16y8 has a 56mm tb and i was wondering if i should keep it the same or up it to a 65mm.

 

i think you should be fine with the stock TB unless you are planning to push like 500HP... but i would check in the turbo forum, prolly would get a lot faster and better info