Quote Originally Posted by dave w View Post
I was mistakenly thinking about the 16197427 TBI computer in post #6, my apologies.

Perhaps information in this link will help with TBI Tuning: https://www.gmcmi.com/wp-content/upl...EFI-System.pdf

An Air Fuel Ratio (AFR) meter is commonly used to tune PE. When PE is active the BLM's are locked at 128. The common method to add AFR's into the 1227747 data log is with the Moates.net APU1: http://support.moates.net/autoprom-apu1/

How to data log AFR's with the APU1: http://static.moates.net/zips/wideba...nerpro_lm1.pdf

dave w
holy smokes, thought i was grasping things but now I feel I am getting lost..I read the links you posted, starting from ¨how to tune a GM EFI System¨ & working my way down. I can see right now I will have to read the How to tune GM EFI again (3rd time) and refrence it later..good info. As far as the Wide band- I am trying to figure out how to set it up to the ECM or is that what the How to data log AFR with APU1 does? I hear people saying to ¨tie¨ it into the ECM or something like that, but, havent figured that out yet, so, basically I need to understand how to set one up then from what I grasp follow the ¨datalog AFR with APU1¨ link to a T ( 0 volts at 10 & 5 volts at 20, etc, etc) thank your for your help and patience.