B20 header help
which design 4-1 or 4-2-1 header better compliments the b20 power band? At this time I have intake and exh, and I plan on adding a header and later crower 403/404 cams alomg w/ necessary tuning components.
TIA
TIA
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exgr
Welding / Fabrication
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Feb 27, 2019 11:44 AM




