dyno tuned it myself with a friend. Had a leaky ls6 manifold at the time (still was using ls1 coolant lines) and put 390 to the wheels unlocked. She consistently ran 114mph in the 1/4 through a stalled auto. That's pretty good in my book for a full weight car. After the leak was fixed I got a tune by EFI Alchemy. Trapped 115mph on quite a few occasions in 70 degree temps with that.