Shaun, now that you have posted your timeslips in the other forum that was linked...here's my quick observation...
1. It was not a before and after only for the intake since you changed suspension as well
2. You picked up almost a full 1 mph over the stock intake (theory says for every 1 mph you gain around 10hp) with a worse 60' (probably from shifting too early) and not shifting at the right rpms...not too shabby for the boss intake!
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2010 GT500
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