I need a little help with my tune...

[[email protected]]

12 silverado 1500 4x4 4.10 gears. 08 Denali 6.2 L92 swap from orig 5.3 vin 7 flex fuel. 6l80 with zip kit, 278mm circle d 2600-2800 stall converter, stage 2 Texas Speed camshaft 212/218 .550/.550 112 LSA It has an Air Raid intake & filter, long tube headers, 3 inch resonator single in dual out muffler with no cats, dual lambda wide bands and original stock flex fuel injectors from the 5.3
GRY 5-23-23 MAF GTG.hpt5-24-2 GTG.hpl
It runs pretty good and has tons of power but surges at an idle sometimes and stalls. It is a crew cab SVM driver side wheelchair conversion truck which makes it pretty heavy plus 33 inch tires and I pull a 10k toy hauler. I have the idle around 900-950 so it helps with voltage running the wheelchair lift in case your wondering. I copy and pasted a 6.2 tune file and then tuned the MAF and did some VVE tuning as well but can't seem to get it right. I'll paste my tune file and a log fille if anyone could give me some insight on what is wrong.... Or do I start over from scratch with a different OS? I have had a few friends help changing a few things in the tune but it never seemed to make much of a positive difference.

[[email protected]]

Anybody? Good or Bad...

[edcmat-l1]

Put most of it back to stock and start over. Idle spark table, high octane table, over/undershoot tables, etc. Take it out of "MAF only" mode.

Put cats back on it.

No reason to have 1 wideband in it let alone 2.

Tune your VVE. This is not a stage 2 cam VVE.

VVE.jpg

[[email protected]]

Ok will do...Are the 5.3 flex fuel injectors good to run in the 6.2 or should I get some ls3 injectors instead? Also, should I just use the stock tune file from my 5.3 or get one for a 6.2?

[edcmat-l1]

You should use your original file and modify that. You can use a stock 6.2 base file and copy over some of it, but you should never just grab a random file and flash it to your vehicle.

Either injector should work fine. Just make sure you have the correct data for whatever it is you decide to use.