I have a 1.8T and I chipped it (GIAC chip), and have a 4 bar fuel pressure regulator and forge diverter valve as well as a short ram intake and custome 2.25 inch exhaust with high flow cat and remus muffler. Just wondering if a FMIC would be worth it since I see kits on ebay for like $400? Do I really need it or is it just for bigger turbo upgrades? Also would an underdrive crank pulley and lighter flywheel be worth it? They are quite expensive! Any feedback would be greatly appreciated!