i as well have a greddy turbo kit... and i have da greddy fmic also and no need for touching the internals... you should run fine if you keep it at the stock preset 7.5 lbs ... but how much miles do you have on your motor...if you have hella miles than maybe you should rebuild a bit... but hey i dont know much... haha im sure pppl here should help you out... they helped me out while i was building my greddy turbo