I squeezed a 12.5 out of my '94, seems like the newer trucks are just getting slower :anitoof:
The 04's are pretty quick. I just sent out a tune to a guy with an '04 4x4 Z71 ecsb 5.3L.
Before the tune, he raced his buddy's Hemi reg cab. He got beat by about 4 truck lengths up to 90mph, so about a 1/4mile. After the tune, he said the hemi was only 1/2 truck length (he was on his rear bumper) ahead of him. So you have some good potential in there.
I just sent him another, more aggressive tune so he can see how it turns out lol, we're hoping with a little bit of tweaking he'll beat that hemi with just a tune.
It doesn't matter anyway, lol, he's installing a cam next month, so he'll be showing off his tailgate :bowtie:
later,
allen