Why are 318's low HP and torque?

Chryslerkid said

I just did a side by side comparison and I see what you mean. They look very different. So you think I can squeez a few more horses out of my build with the weiand intake?

It's funny cause the performer intake is more money than the weiand intake through sumittracing new.....

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Absolutely. What you see with the Weiand is a "funnel" effect with the runners. That increases velocity at the the intake port. The Performer is a more popular seller hence the price difference. I would be willing to bet there's a 20HP difference. It wouldn't surprise me one bit. See....the Performers are all exact copies of the stock intakes that they replace. So, weight reduction is their only real claim to fame. Now....you might have to mod some brackets up front for the Weiand....particularly the A/C bracket if you're running that.....but I think the mods are well worth the better intake.