Quote Originally Posted by GMPX View Post
You already did a 15.2 1/4 mile right Brian? I wonder if this improvement might just get you in the 14's?
My Cruze is currently running on 72% E85, oddly enough still getting some knock retard above 8 degrees at WOT, however, exhaust cam position greatly affects this too.
Are you still using the stock knock balancing rate values in table B1940 and is the knock only above 5200rpm? If so I think there is some false knock occurring based on my test results. I ran out my tank of 93 octane (your 98 RON and filled up with 89 (your 92 RON) and I actually saw slightly higher final timing on the same amount of meth/water injected.

14s should definitely be possible- I was running the stock transmission calibration when I ran the 15.2 at 21psi boost, but had the ported TB and ported intake manifold installed and I still need to put those parts back on the car. I see ~7% higher MAF readings at the same boost pressure with the ported TB and intake manifold