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Flieger Flieger is offline
Max Sluiter
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Join Date: Mar 2006
Location: So Cal
Posts: 19,577
I think the cookie cutters were an attempt to tune the extractor effect to a cetain rpm. Isn't the middle tube of the cookie cutter actually tapered like a sort of reverse cone? This would change the resonant frequency of the exhaust pulses, IIRC.
1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance

Last edited by Flieger; 06-18-2011 at 10:25 AM..
Old 06-18-2011, 10:22 AM
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