Theres another thread about the FPR and the tune. Im sure the site will tell you fairly easily. Also, dont get a stage 1 chip if you have a ko4.... thats pretty straight forwards.

 

GIAC - Software Programs

Looks like there's provisions for both. Stock injectors with 5bar FPR or 330's with a 3bar

 

my buddy just put a new ko3 in his 99 A4, almost same as mine and has the APR stage 1 tune, and he also wants to throw injectors, probably not needed but were looking at these 440cc ones any thoughts? i know its probably not neccesary but he wants a lil more JUICE. lol

 

those are too big for what the k03 can provide. apr's stage 1+ and 2+ use 386cc injectors. same with the K04 tune they provide, it also utilizes 386cc injectors.