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I don't think there has been any substantial gains n/a using any aftermarket manifold without PP heads/cams. Plus, the hardballed looks identical to the stock one except for the material. Unless it misteriously flows some crazy amount of air, you will probably lose power on a n/a setup because of how much more heat the manifold will retain vs stock plastic.
Plus, the hardballed looks identical to the stock one except for the material.
the plenum area is substantially larger , and also the runners are a full 1 inch smaller. as for the low end power loss ,i would be happy to lose some , i have it to lose. you don't need low end"power" in a drag race except forthe launch.even if you lose some , you will gain it in your hole shot from spinning your tires less. (assuming you are racing on street tires like me).i look to physics and specs for my judgement. shorter runner = less velocity more volume = top end power low end torque. for a drag race you want top end power and low end torque. the manifold is a track manifold , its not for the seat of your pants feel. i don't know ,i'm happy to hear what you all have to say , but if you don't have this manifold , or know someone that has this manifold , you aren't being helpful, i just want to know if it helped improve times at all, and what kind of power it made , dyno proven preferably.