7.4 Vortec engine
0411 PCM
Important Mods - I/H/E, towing cam XR264HR-13, 42lb@3bar injectors
I'm trying to get my truck running properly and finding that it seems to be running very rich. I watched several videos and clearly aren't doing something right. What tables control the AFR at idle? My LC1 is showing anywhere from 10.5-12:1 most of the time. It seems to start a little rich and just keep getting richer the as the engine tries to warm up. Basically stock 7.4 tune file with some minor changes for injector size and to get it to start and idle better. I maybe have to adjust the injector size as the place I bought them said they would be about 52lb@4bar the truck runs but looking at some online calcs it maybe be closer to 48.5.