I'm changing the plugs tomorrow. The guys on ls1tech don't seem to thing that's the problem. All i know is, i need this thing fixed asap and don't know how to get it done. Is it true that some dyno shops can actually do true computer tuning? Someone claims there's one up here in New England.

I can easily reproduce the above mentioned numbers so I also don't think it's the plugs. It's not only when i'm in 4th gear, but, that's when it is most obvious/embarassing.

I think the last tune might have been ok if i had the alcohol injection hooked up. Parish8 on ls1tech seems to think he could figure out the problem if he could see the files, which probably isn't going to happen I assume. and yes, it is actually 2:15am right now and yes, i'm awake because i can't stop thinking about the money pit i call my truck.