I didn't seem to get anywhere in the other post. While my particular setup is a pain in the butt... I have to figure it out. There aren't any reputable tuners in my area in Bangor, Maine.
I have an LM4 "Gen 3" on a E40 "gen 4" PCM. The E40 is from an auto and has some segments from a manual so my speedo works and that seems to scare people away. My speedometer works perfect and that's not my problem...
I run lean under WOT 14.0-14.7. I put in the correct injector data and still no change. I upped my Power Enrichment by 5% and still no change. I even purchased a new Delphi AF10043 MAF because mine looked a bit rough.
I have a new Delphi PS10000 MAP Sensor. I upgraded my Intake the other day to a NNBS intake with New Gaskets (it ran just as lean before the intake swap), Cleaned all the injectors and used a tool to pulse them under fuel pressure with cleaner and the spray patterns look good.
I installed a Holley EFI Fuel Rails and have a AEM Fuel pressure gauge with sender that shows 58-60PSI under WOT. These were things I was planning to do anyway to freshen it up, but just trying to paint you a picture.
I have 2 AEM Widebands, One on each bank and they both show lean under WOT so it's not the widebands and my welding of the bungs are flawless with no leaks.
The vehicle has 25lb injectors (Multec 2), Uses a (78mm) 3 Bolt Throttle Body, Has a Trailblazer Pedal, Gen 4 Knock Sensors. This is a Returnless Fuel System with no vacuum reference.
I have a general basic understanding of how to use HPTuners, But as far as what certain values should be I have no idea. I can compare my Tune with Factory Tunes from the repository but it's hard because I use a Gen 3 engine and there isn't much to compare it to.
I might be able to compare it to an LH6 from a 06 5.3 trailblazer for air seeing how most of the sensors are the same and Fuel from a 04 Silverado LM7, but I still ended up here. I know my MAF tables are a bit higher than normal but my thought was that it would make it richer not leaner. But again I'm not sure
I have 4 log files and the Tune File...
Who ever is the first correct response that helps me fix my tune and it works I will Paypal you or Cashapp you for your time...