Well went to the dyno today, I must say I am pleased with the results.

with stock pcm 246.23 rwhp 299.74 rwtq
with custom tuned pcm 273.38 rwhp 335.06 rwtq

gain over stock 27.15 rwhp 35.32 rwtq

If you figure 26 percent driveline loss with the allison tranny
stock 246.23 rwhp + 26% = 332.74 at the crank
westers 273.38 rwhp + 26% = 369.43 at the crank

h.p. gain at the crank 36.69 not to bad

The only other mod done on the truck performance wise is an airaid filter kit

stock pcm Dyno sheet


Custom tuned pcm Dyno Sheet





as you can see on the stock dyno run the torque had a bad spike so I did not use the toque from that pull

The custom tuned pcm had approx. 750 miles on it when dynoed
I pulled it in dynoed it with the westers two pulls then swapped out the pcm's and did two pulls on the stock pcm.

93 hot tune Westers