Went to Ivey today and got my pb 2011 gsr tuned, 0 counts of knock so far , my stft hit 4.7 once but it stays under 2 most of the time , Sean hook me up with 2 maps one at 24 psi and one at 26,the car feels great and so much more powerfull than my previous ots stage 2 map, Just wanted to say thx to Dave and Sean at Ivey
MODS:
Agp cai
Map ucip
Rexpeed downpipe and testpipe
Cobb ebc
Tsudo midpipe and axle back
Cobb v2