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I super appreciate this question being answered. This just made my first Gen 4 swap start.

If you like the functionality of 3.XX you can keep it and the credits still work. You just put you new application key in and things are normal. The 4.XX version will let you open the tune repository...

90004900059000690007

The fan wiring diagram is from a 1999 Camaro and is what I have used for wiring on the LS swaps I have done. The other diagram is the HVAC control from a 1999 Silverado 1500...

Don't forget you can create a problem to help with your diagnosis. Such as creating a vaccum leak and watching both oxygen sensors go to .1 volts or adding brakeclean or propane and watching both...

On a stock wiring diagram the only red wire going to the alternator is the battery wire. Is the red wire you are talking about going to the large terminal of the alternator or to the plug? A picture...

80108

This is from a 2000 3/4 ton with a 6.0 and a 4l80e. If this doesn't work for you I have a friend with a 1999 6.0 2500 4l80e that I could read next week.

I'm sorry it is modified a little. I just compared the file I usually add "_mod" to the end of after any changes and it's the same. The stock file must be on my hard drive at home after I cleaned up...

This is a tune from the repository from a while ago I was comparing against. It is definitely modified. I had a quick look at power enrichment and it has been changed. Be careful what you use from...

This is a file for a 2007 Avalanche if it helps.
79623

I did them separately and it worked good. I set the MAF fail and the High RPM Disable one at a time and got data. I had done this from the beginning. I was just messed up on the high RPM stuff. I had...

This is the latest file for the rig. I would have put it in the last post but I either forgot to save it to my computer or can't find it. I had to pull it out of the buggy.

Thanks Cobalt, that worked great. I got into the higher RPM ranges and made changes to the MAF curve and a bit to the VE table. The screen shot shows a better actual AFR and the log is better except...

Thanks. I did the same tuning as you described but not going over 4000RPM because I thought I read somewhere not to. I thought it said it could lean out too much without both MAF and VE running the...

Thanks for the info. I am thinking I will try my VE numbers a little higher at high rpm and see if I can get my AFR in line. I wish I had a dyno. The dyno that is 1 hour away is owned by a guy that...

Sorry, I completely forgot to tell you some vital info about the rig. The injectors are 38 pound units from DeatschWerks part number 32D0000388 . They have data on their website that I copied and...

The buggy that I am working on has a new ATK 460HP 6.0L engine in it. I disabled MAF, PE, and trims and got good VE data up to 4000RPM during a road test. I kept it in open loop and put my MAF high...