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Chris,
My 3.2 row made 250hp in UK before I bought it. This was with custom made chip by Wayne Schofield and M&K one in two out rear muffler and bypass in place of front one. It is said that boring the throttle body does not really help without changing cams.
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911 -87 Marine Blue, 3.5 twin plugged, DC24, 22/23 sways, 22/29 bars, PB front and rear, G50 with Cup LSD, Heigo CS cage
911 -73 track project
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