:"On my JWT it says it's a 700CC setup(see pictures earlier in thread), so suppose i have 700cc injectors, pretty heavy, could this be why the shop decided to put the FPR in and wanted to put a AFC in? to lean it out at idle etc?" -SaphireZ :....let's start small, do you KNOW for sure what injectors you have installed on the car? :Have you looked inside the ECU to verify that it is INDEED chipped and not just a swapped cover? :let's try to figure out what you do/don't have before you start spending money on things you don't really need. good idea! thank you! I will start digging a little more and do some verification. and get back.