If I remember right it was more like a 12hp gain or so at peak on a pretty stock car with the plenum and 75mm, but the average gain was pretty impressive too. I'll see if I can find where I saw them posted.
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Strike down the unroadworthy!
2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more
'94 Rio Red Cobra: All the bolt-ons, 3.73s
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