Ok, I have a 2001 Cummins so far i have put a old xllairader (160)hp chip on it, i have ordered a s&b intake, fass 150 gph fuel pump and a diamond eye 4in down pipe to 5 inch exhaust.  It has spit the P0230 code   (Transfer pump circuit out of range). i was wondering what that was exactly an if the fass would fix it?  also i am wondering what to do next i was thinkin 100hp nozzles and the mads smarty to stack. but i believe i'm going to need a turbo? or can i just modify the original turbo?  Also i had a guy tell me i could stack a ts fuel box? and the smarty is that even possible?