I could stand a little advice right now because I dont know what to do next. I have a 2001 ZO6 with external mods (Blackwing, Vararam Pwr Dct, Modifed Radiator Shroud for Ram Air) and an uploaded performance program via Diablosport. The car runs like a scalded rat and its probably has at least 25hp over stock. Every now and then, I get a slight ping on acceleration. I did a fault scan and it says that Bank1 is running lean. I know that its sucking a lot more cold air than the stock setup and because its onlly one bank, it would seem to be minor enough to fix. Also, the MAF is the stock unit (screened) , and the Vararam power duct relocates the MAF right next to the throttle body for a more accurate read and the air stream is as straight as possible. Great performer otherwise, but I need some sharper brains than mine. I hope this is enough detail. Thanks!;help