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Reply to "Call for help 1 hour North of the SanFrancisco Bay Area (Santa Rosa)"

On the Webered car, just the SCREEN on one and no screen on another will change the reading of those plugs. Fact, not an opinion.

If I might suggest (not stating right and wrong Wink ) tune the car with no screens or air filters first.

When you get it to where you like the results (not saying at all what is and what is not right, you determine that, Wink ), then you put on your screens or air filters and do it again.

See what effect that has on the plugs?


If I am not mistaken (and yes I can be and more often than I would like) the best flowing screens I have seen for the velocity stacks only flow around 80% of open stacks.

With Webers that's around 80 to 100 hp loss on this engine.
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