Riley Will of BRC Racing, dyno testing his mild CR500 engine with MSV Racing Exhaust Manifold on the BRC engine dyno. +4.0 HP at 6300 RPM pre-peak over OEM manifold and +1.4 FT.LB.TQ at peak over OEM manifold. That is huge for just an exhaust manifold swap!
msvracingpowersports.com
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