Longer runners=lower rpm power increase
Larger Plenum=higer rpm power increase
If your only revving to stock or 8,200 rpm, go with the Performer X = Power-band 4500-8200
"The Performer X intake manifolds for Acura and Honda's are engineered for street/strip applications where peak torque and horsepower gains are realized between 4500-8200 RPM. The larger-than-stock plenum volume and 9" runner length are tuned for producing peak power at high RPM."
If your going to be revving to 10,000 rpm go with the Victor X = Power-band 7000-10,000
"Optimized for maximum power from 7,000 to 10,000 RPM, the Victor X manifold is designed for turbo and all-motor applications. Engineered for high performance, this manifold has four additional bosses for nitrous or added fuel injectors"
This is regardless of if your turbo or N/A that's what range they were designed for. Hope this clears up some confusion about the difference in these two manifolds.
Thanks. All it says on it is JG Edlebrock on it. I have had it for a while and just forgot which one I had. It worked great when I had 384whp and it still flows great now at 515whp. Hoping it will still flow good at 600+. Good mani for the price.
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