Have you ever got a tune done and the first driving impressions just blew you away...and then about 2 months later you feel as if it's back to "stock". Well that's how i felt, so i sent mine out today to get all TM removed, up the rev a little more, get some SES lights turned off and such. Well put my stock pcm back in and i absolutely HATE it. It almost makes me not wanna drive the truck b/c it drive so different with it. But anyhow, if you ever think something's wrong w/ur tune b/c it doesn't feel as stout or something, just put ur stock one back in and u'll definitely feel a difference.

 

It is painful for my to drive my buddy's stock Avalance. What the fuq is GM thinking the way they tune these things.

 

have you ever looked at a stock tune...i dont even know how these damn things run on a stock tune

 

know the feeling, put my original in a few days ago, because I wanted to have the pcm reprogramed. Like you said, I thought the truck had become sluggish. Now I know what sluggish really is. GM should just include a programmer with purchase.