Update 3
Also, BIG thanks to Adrenaline Truck Performance and Rob for helping with tuning. Car has a DSP5 tune with trans that really woke it up! Runs smoother, no jerking, tons more power. Even on the 300hp "Stock" tune, the car rips and is fun to drive.
On a quick run, rpms at 2500, 5th gear, TC locked, gearvendors NOT engaged, 125 mph was like driving to the grocery store. Butter smooth, no shaking, felt like 60 mph cruise set.
Ran into a problem with the gearvendors when engaged: Since we used a 4wd trans, the final output sensor usually goes into the transfercase, but was spliced into the gearvendors sensor. When engaged, codes for slipping 2nd, 3rd, and 4th gear put the trans in limp mode and CEL came on. No slipping clutches or anything, just the signal didn't match with what the TCM was trying to read.
Had to have a box convert the signal 22% more to match and not put the Allison into limp mode. Works great, test drive proved it works after 5th gear. I'll try other gears later, but we wanna go FAST!
El Mirage is this Weekend for September, going with the goals to pass tech and hopefully get liscensed. Car should be around 160-170 mph this time out. If all goes well, double overdrive engaged, max effort tune, math puts it at about 220 mph if it all stays together.
Guess we'll see shortly! Sorry bout the long updates/posts