Mike, thanks for the info. What you describe is exactly what I envisioned runnig, with one exception. Why should the collector be 3"? The pulses should never meet the collector at the same time (assuming equal length pipes), so wouldn't the big collector drop velocity and reduce scavenging? My minscule knoweldge of exhaust theory tells me that the 2 1/4 might actually be better. BTW what Dynomax are u running? the "cherry bomb" type with the high temp packing? I have used one of those and it held up well.

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Carl
#33 CSP/soonITA/IT7
[email protected]