Nelson & LQ4?

[01hd]

Going to order a tune from Nelsons soon. Its for an 01 2500hd 6.0L 4x4 with a rebuilt 4L80e. Just some quick questions? Anyone had a tune in this type of vehicle and what gains did you see? I dd it and tow as well so going with the 87-89tune. I would like to remove 100% tm. Cant see why Id need it? And when I stomp on it I want it all! LOL. Does Nelson normally increase the shift firmness for normall driving? The order form is kinda vaque. I would like firmer for normall throttle and harder for Wot and towing etc. Thanks for any tips/Hints or experiance guys. Looking for more Oomph and MPG.

[Frenchy]

The transmission can essentially have 2 tunes, normal and on tow/haul. So you can have your pie and eat it too. You'll see better gains with a 91 tune, and with my amateur ass tuning my truck I picked up enough fuel mileage to cover the cost of running 91. You'd be better off calling them and telling whoever answers the phone exactly what you want.

[01hd]

Great thanks. Live in Canada so I hope its not a long phone call LOL. Not sure about the 91tune. Its pricey and Ill be towing etc?

[viperbluelx]

How do they tune the VE table with a mail order tune? Or do they leave the VE stock and just bump the timing up and adjust transmission settings?

[Frenchy]

He's done hundreds. Likely has a couple "master files" so to say for it. A stock LQ4 is a stock LQ4. I doubt everyone's mail order tune is different. So yes your VE will be adjusted