Engine is still running pig rich at idle. It dies when I start it up cold. I must open the throttle to get it to keep running. Then it will eventually idle ok. It’s a stock 5.3. It has 1-7/8” long tube headers and a 4” intake pipe. It’s running through a factory truck MAF. I don’t know if the MAF needs recalibrated or what. I know the headers are too big. Planning for a lot more power later. The A/F ratio seems to be ok when revved up. Then the fuel trims quickly creep up at idle. The injectors are questionable. I have three new and eight that I freed up with cleaner. I tried to attach my tune and log file. Not allowed? Any help would be appreciated. I may be taking it to a tuner.
|