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It's been shown in tests that the M1 and Weiand are far better than the offy.



if you look at the test you speak off, it wasn't a fair test

I agree. The M1 and Weiand used 750 DPs. The Offy was stuck with Ed 500s.

and they had no jets/metering rods, so the Offy was pig rich something like 10.8:1