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      01-30-2013, 10:08 AM   #18

Drives: '09 Space Gray E92
Join Date: Mar 2011
Location: Miami, FL

Posts: 1,121
iTrader: (7)

Originally Posted by Ænema View Post
Knock has nothing to do with the timing reductions that are occuring due to CATs. Even if you timing corrections are zero across the board but your CATs are north of ~105F then you are losing some serious timing, all the octane/cylinder cooling in the world isn't going to help. I think that would help to explain the great ETs but the lowish trap speeds you were seeing. Get the CATs down and you've got an 11 second car
Good point. With how hot the air was entering the motor, there was no way it wasn't slowing me down. Boost was dropping off substantially according to the in-dash boost gauge. No doubt that timing was suffering as well.