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I'm with ya. I made like 317 at a dyno day and a couple of my buddies went to a dyno another time and were laying down like 340+. We all went to the track and I was running my shitty low 13s at 110-111 and they were running a few tenths slower at between 108-109. They were confused as to why they were running slower with "more horsepower". My point for the topic starter is don't let your dyno numbers talk for you, let your track times do the talking (as long as you can drive that is ) Dyno's vary all the time and there might be a day you will be puttin more down and then another time you might put down less.