I have 2000 s10 reg cap ls stereo (2 sub boxes with 10's and an amp.. Added a little extra weight behind the seats, if that makes much of a differance at all ?!?
I ran 19.3
With
Jet chip II
Low temp thermostat
Half Tank of gas
Single in dual out exhaust
Thought that was pretty bad, so I re-did exhaust to single in/out with turn down before axle (I can feel a nice difference there, more torque, my 60' was 2.7 - 2.8)
Not only did I do that, I modded the air box (noticed a diff. small one, but there was a diff.)
And put in a B&M shift improver kit (chirps 2nd gear)
I'm going to 1/4 mi Sat. Jan. 17 and i'll see what she does then