no, with Hp tuners, you type in what flow rate injectors you have…re-write over the existing tune and the computer automatically scales all the fuel trims and everything for the injectors.
we didnt know before my car went in that I would need injectors. He said he has had people with a similar setup be fine on the stock 28.8 lbers, and others max them out. Im going to pick up some stock 03/04 39lb cobra injectors and I will be good to go.
Im also pulling 1000 more rpms now then I was before.