School me on Intake Manifolds

[mrk5]

In response to the original post...
I thought that I read an article in hot rod magazine a few years ago where they dynotested a few different intake manifolds and posted either the numbers or the graphs (I can't remember which). The surprising thing was that their dyno showed the performer RPM had better numbers throughout the entire RPM range than the performer manifold. I always thought that the performer would have better numbers down low and that the performer RPM would have better numbers up high.

Can anybody confirm or deny this? I am having a hard time understanding why the performer wouldn't do better than the performer RPM at low RPM's.

I've read a similar product testing in Mopar Muscle. They did some testing with a Performer, Performer RPM, and Mopar Performance single plane.

Their results showed the RPM had the best overall results. IIRC it worked better at lower RPMs as compared to the regular Performer intake. Which surprised them, I think that's why I remember it. It's not the results you would expect.

I agree with Sled Dog, I don't think just an intake swap is really going to make a big power improvement. The rest of the motor needs to be built to take advantage of the better intake.