I have an 89 Iroc-z that I replaced the L98 with a gmpp 350 H.O. I put in the ford 24# injectors. I used tunerpro to change the injector sizing. I was running really rich looking at the plugs but my ses light came on and threw a code 44 saying it had a lean condition. I know I need to be at 128 blms but not sure which direction to go. Thanks