i2 for '04 silverado

[mtjeeves]

So probably 5 years ago I bought an i2 tuner for my 04 silverado 2500hd with the 8.1 in it.
The tune that came with it was terrible. The truck couldn't idle, after a "fixed" tune I would experience fuel cut and bogging, they gave me a third tune, the truck wouldn't start with it.
So I spent time complaining and trying to get help. With no luck Eventually I was just left unread in comments. Never ever did get a tune for it.
Was just going over the order for my challenger, and pulled this i2 for my chevy pickup out of the desk drawer.
Any chance you guys ever came up with a solid tune for an 8.1 with the allison?

[mikel]

I know there are cases where the preloaded stuff doesn't work because GM shared engine cals with different trans, but from my experience, we were always able to correct them.
If youd like to give it another shot, load one of the tunes and then post the backup and last tune written files here and we'll check it out.