So here's the deal. I have a Roush super charger on my 07 4.6 GT, I put on the kit from Stage3motor sports that has a 2.57 pulley good for about 7-8lbs boost, a Steeda cold air intake, and a 90mm mass air housing and they made me a tune for it. The car runs great but I keep throwing codes for bank 1 to lean and system to lean. I was told I didn't need new injectors. Could this be an issue with the tune or do I in fact need bigger injectors?