3'' catback on ka24de?

[jdmfreak]

What exhaust do you have?

[nlzmo400r]

one less bend WILL NOT give me 15hp, first of all im n/a, this entire exhaust will not give me 15hp, although it may have given you a couple extra ponies, being boosted and all. Also, Hitman whats your thoughts on my exhaust idea?

[TurboKA37]

i have RSR gt-II. i was just kidding about the one less bend giving me 15hp. im not even boosted yet, im waiting for WDRacing's kit to be released.

[crzycav86]

I laugh every time I see one of those monstrosities grind on a speedbump or a driveway.

"Mandrel-bent" does not have anything to do with how the muffler sits. Mandrel-bent means the piping for the ENTIRE system is bent in such a way that the entire inside of the piping retains a constant diameter (for better flow).

The "angled" muffler has nothing to do with improving flow, regardless of what they'd like you to think. It's purely an appearance thing, as is that enormous canister. It is a good system, just more style than substance.

I really need to work on my "Top Twenty Exhaust Misconceptions" list for the BRM website...

Actually Greg, I must disagree...

At the very end of the stock s13 exhaust, the piping kinda bends like this:. . . . .|. . . . .|. . . . /. . . ./. . . /. . ./. . .|. . .|. .| . .|. .| . .| <-muffler

As you can see, there are 2 bends right before the muffler.

On the apexi unit, it bends like this:. . . . .|. . . . .|. . . . /. . . ./. . . /. . ././. . .//. . ./ <-muffler

The apexi exhaust removes that last bend to improve flow, and that's why it appears to be angled. Another reason may be aesthetic, but I don't know if it's completely true that it's "purely an appearance thing". Whether there's much of a gain from 1 bend, I doubt it helps too much.. but it probably doesn't hurt anything.

[Chingon]

that last bend won't do anything to hurt flow, especially in a mandrel bent system. And nlzmo400r, why not just go w/the 2.5? You said you were going sr, and if that's it, than, 2.5 is more than enough. Now, if you plan 300+ hp, that's a different story...

[TurboKA37]

there is an advantage in spool up between 3" and 2.5". there should not be a noticeable difference in torque while still NA and you are slow NA anyways so it doesnt really matter. ive seen a dyno graph of a 3" exhaust on a NA ka with only gains so it cant be that bad.

[nlzmo400r]

well, see i say i might as well get the biggest im going to need right now. When i do go SR or turbo the KA (one of the two is inevitable) then im going to need the 3'', and i figure if 3 wont hurt me much now, might as well go ahead and get it in advance

[Poatree]

hey chingon i noticed that you hav the K&N cone filter... hate to go off topic but i'm considering one.. how do you like it?

[Chingon]

hey chingon i noticed that you hav the K&N cone filter... hate to go off topic but i'm considering one.. how do you like it?

call me crazy but I think I lost some low end torque. Mid and top did get nice however, and when gone past 4k rpm it starts making a wicked sound. I think my install would benefit from going cold air or a vented headlight cover with a heat shield around it.