Hey all, hope some of you who know these trucks better than I do can help me out here. So I've gotten to the point I believe the truck is running the way it should and I am ready to buy the Quadzilla for it, but I wanted to pick your brains here just to see if I missed anything or if there's other things I can check. My main goal is to have the truck running 100% correctly stock before adding the tuner so that way I can maximize the potential of the tuner. I didn't want to throw the tuner on when the truck isn't running to its full potential in stock form. The truck is mechanically running perfect, what I'm looking for is things to test and check electrical wise. I'll list what I have already done to the truck electrical wise and you can let me know what all I have missed and need to do. 

 

Ecm has been replaced with a good running one, no codes (came from 99 auto, mine is 98 auto)

WT Ground Wire Mod (AC noise averages around .03-.035 at idle which seems a tad bit high)

New Rectifier and brushes in Alternator 

PCM protection Mod

New Battery Cable terminals, copper lugs crimped and heat shrunk for weathertight seal

Cleaned all block and chassis grounds running from batteries

 

I think the only thing I have never messed with is the apps sensor, never tested or adjusted it. My throttle position never reads 0% at idle, usually reads 7-8% and at full throttle sometimes reads 73% and other times 100%. Not really sure what the deal is there. Otherwise, I believe I have hit it all. The AC noise seems higher than most people I've read about but not sure how to get it down any further since I've done all the mods. Very rarely the Converter will jump in and out of lockup, not sure if that could be related to my AC noise being in the .03 range. 

 

After reading everything I've done does anyone have any input, suggestions, or ideas on anything else I should check or test so I can ensure my truck is running to its full potential stock? Hopefully I'm all good to go, but if anyone has anything I should do or I have missed please let me know, I'm not looking to band aid an underpowered truck from electrical issues with a tuner. 

Just a heads up to reply back to @JAG1

 

The only reason I promote the painted metal versus grease cover bare metal. Being in Idaho we use a lot of salt on the highways and exposed metals disappeared rather quickly. This is because so many people scrub off a huge area of exposed metal and now the salt water will rinse grease and oil off rather well and shortly after 2 to 3 years that ground isn't hooked up at all because the entire area is stripped of paint has now rusted away, just gone. Happens more than you realize.