I was going to load a custom operating system and go mafless after I get the idle and thing tuned. Just trying to get it drivable so I can take it to get it tuned. It's a 5.3 with flat top pistons and an Asa cam with 36 lb Bosch injectors out of a Camaro. I've already set up the ifr tables and it runs some what but very rich and when warms up does. But driving a short distance it stays running till come to a stop