CAI or Short Ram Intake

[Wayne Cox]

At 04:01 PM 6/20/2003 -0500, you wrote:
>An AEM CAI, though most expensive, is the best beginner upgrade you can
>make.  CAIs gain power vs. stock not only because the pipes are smoother
>and the intake air temps are reduced, but also because the length of the
>pipe is tuned.  The air inside the pipes has a resonant property that
>literally forces air through the MAF and TB at specific points in the RPM

This really kick arse article I found was posted on se-r.net way back
when:   http://www.se-r.net/faq/articles/head.tech.html
and explains some of the physics at play very well.

In general, a long-tube intake creates more torque at lower rpms;  A
short-runner setup gives better top rpm torque, hp, and throttle
response.  Though there are a lot more variables than just intake
length.  You've probably noticed in the car mags & such, many of the
high-end import manufacturers have engines with variable intake runners?

For a street car, the CAI is probably the better setup.

    -Wayne    '91 NX2k - '93 NK2k - '93 SE-R - '92 SE-R parts car