I went 12.80 @ 104.6 and then ran like 4 12.9's Saturday at the diesel day.
I'm only hitting 35-40 psi of boost since I have a leak at the intake plenum. The 3" coupler is crushed horribly. Oh well, truck weighed in around 7700 lbs give or take 50lbs for fuel depending on the run. Before this issue, I could peg the 60 psi boost gauge.
Here is a picture of it, with everything on it for sled pulling.
Here I am racing Chris (ECHO) from the forum who was running impressive and consistent times over the past 2 years. His time on this run was 13.3 IIRC and his best run of the day was 13.18.
YouTube - MDTDC diesel day 025
I was having huge traction issues off the line. I was running 33x12.50 Super Swampers and would spin them for about 40-50 feet. I kept lowering the tire pressure from 40, 35, 30, and finally 25 psi and my times and mph were effected by it negatively. In the end it's going to boil down to getting track tires on it and shedding some weight. The truck with just a tire change should run 12.5's since my 60's were in the 1.85-1.89 range all day and power was down some with boost leak.
I should mention this was also straight fuel and nothing else. My water injection controller is broke, and I have no nitrous to speak of.
I hope to see 11's out of this truck, on fuel only. Ironing out some details with some vendors.