119000 miles and till runs like the day I drove it off the lot. Except now it smokes when doing 30 and putting the petal to the floor.

Who out there lives south of Houston and has either efi live, ppe, diablo, quad, or a tech II???

 

bump

 

Are you sure its not just turbo lag?
The LLY doesn't have a VG-turbo.
It sounds like it's puffin at low pressure.

 

the LLY does have a VG turbo that was the first engine that gm put them on

 

Sorry to hijack, but my truck is actually doing the same thing now...
I've only noticed it a coulpe times, but yesterday I was watching the mirror and at WOT at 55mph there was a pretty huge plume of smoke behind my truck, a nice cloud of exhaust...Wasn't black or really blue or dark, just a plume of gray-ish smoke...Tried to make it do it again after that and it would only smoke at WOT at really high speed in top gear....Is that normal? Could it be an injector?