I've got a 01gt 42lb injectors and 90mm maf, had a vortech for a while now its n/a. It has a very very safe tune in it (sct flash) it just gets kind of crappy mpg (18 combined) compared with my 03 cobra (23 combined) i'm just wondering if i put the factory maf/injectors in and get a tuner with the best mpg tune if 1. it will even work, 2. actually improve the mileage.......thanks!