The clips were recorded in my driveway with a mic placed a few inches from the exhaust tip. I haven't figured out how to record any acceleration runs yet, but I'll get it eventually.
Gas mileage doesn't seem to be adversely affected. No hard performance numbers, but the butt dyno seems to say a noticeable gain in mid to top-end power...not to mention the sounds at those rpm's are great!
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Andrew Morris
'99 SE Zetec ATX
Toreador Red/Greystone
K&N, badgeless, Knauberized
FlowTech Red Hot res, Flowmaster 40-series
http://www.mindspring.com/~drumnut
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