Finally got my GTO dynod for the first time. It is completely stock except for the Lingenfelter CAI. I also went with a friend of mine who had an auto 06 that was totally stock. My best numbers were 342.8 rwhp and 373.9 ft/lbs. His best at the time was 329 rwhp and 350 ft/lbs. SAE corrected. Both of our air fuel ratios are of course too rich, looking at my graph, mine dips almost to 9 which is extremely rich. The dyno guy said we should be running in the high 12's, like 12.8, and that we should pick up almost 20-30 rwhp by adjusting the air fuel ratio. Does this sound reasonable? We are both getting our cars tuned next week, so hopefully we can get some more power to the wheels!!!!