[Viral]

Um, my reply was like the 4th one in this thread and I basically said the same thing. I gave him a possibility of maybe 5hp or less with all that. I had never heard of the GMPP headers so I didn't comment on those (because it turns out they don't exist).

As for the "up to 50hp" comment that you quoted, I think you took it out of context (although they should have said up to 50 lb/ft of torque, not HP). He was referring to the low end Torque that can be gained under the curve at the low end of an L99 with a tune that includes removing torque management. It has nothing to do with peak gains.