you'll have better luck finding the 2.75" tubing online. i'd look at any sort of industrial material supplier, rather than the usual summit racing or carparts.com, but i would also check the usual places for thoroughness.

 

i found 2.75 but its straight... does bending cost alot?

 

Unfortunately, yes. Mandrel bends aren't cheap and I had a tough time finding places that do them on-site.

Most exhaust shops around here stock prebends and cut/weld them to make the shapes they need.

You can get some good prebends at www.jcwhitney.com. They have a bunch of sizes in both aluminized steel, plain steel, and stainless. One U-bend should be enough for your intake, but it will require either someone welding it for you, or a rubber/silicone coupling to hold the pieces together.

ac

 

Random,
I hadn't heard of that technology. In theory it seems to make sense, but I still see the resonation as a one-point tuning. But, if you could tune it so that the compression points of the acoustic wave are hitting the intake valves right as they open, then you could get more volumetric efficiency out of the engine.

Combine that with the straight flow characteristics and it could help over a broader area. But that may be at a sacrifice to the other areas (i.e. midrange is better and great at the exact middle, but worse with low-end and upper high-end).

Ah, if I was only back in school where we could test the heck out of this. smile.gif

ac

 

well after reading about the aem v2 and seeign the dyno from a civic dx gaining 19hp then that is one sick *** cai. i had the random special in 2.5" and it worked very well but then i re-routed the intake and made it shorter from the info i got from one of the Jaws on this site. widened the hole next to the battery and ran it down there into the fender....after that i felt even more of a gain