edelbrock performer rpm air-gap is what i'm using
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i had purchased a performer on the advice of a local shop owner (who was just wanting to get rid of inventory, but told me that it was the intake i wanted for sure, hands down, couldn't find a better intake

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After reading a couple years of rodding magazines as well as posting on different forums for a while i realized that the performer wasn't really what i wanted, so i reaserched different available intakes, and asked of a couple forums, and the edelbrock rpm air gap seemed to be the winner, supposed to have the good torque of a dual plane, but have the high rpm usage of a single plane, not sure how true this is or not but it was reccomended by many a racer and engine builder (who may have been victims of edelbrocks marketing budget as posted earlier

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in my research i found it's hard to tell what inakes are good cross companies though since the rpm ranges they work best at are not defined using a universal standard, so saying that the weiand intakes work in a bigger rpm range is not quite true, weiands intakes all have a broader advertized range, where edelbrocks have a smaller advertized range, but probably work as well through the same real world rpms. However this is all speculation, maybe weiand has found a way to make their intakes have a broader range, but i would think that technology would be quickly copied by thier competitors.