I know they claim 20 bhp increase but what does the "seat of the pants" test tell you? I know the weight savings and sound alone can justify the investment but I am just curious about everday experience with the power.

 

Any AM sports exhaust (Quicksilver, Tubi, Mansory, even dare I say it, ours at RSC) will give you 5-7BHP tops. I agree with you and always suggest to our customers that weight savings and sound should be the primary reasons for buying an exhaust.