Cat-back Exhaust

[94lex83457]

what is a list of good cat-back exhausts. Not just muffler, but actual cat-backs, money isn't much of an issue.

[jzz30]

hks, fujitsubo....

[JDOwen2]

Borla

[jcm3]

Most of the good system are axle back and are not going to give you any real performance gain (they maybe lighter). The stock mufflers are straight thru. If i were you i would do a true dual exhaust using 2.25 piping w/ x-pipe or h-pipe and good straight tru mufflers.

[94lex83457]

Can cat backs on the GS 300 work on the SC300?

[jzz30]

i dont think so but fujitsubo makes a full cat back.

[sc_toy]

I wouldn't change the stock mufflers, they do a good job of keeping the noice down and are a pretty nice straight through design. I'm going to get a new midpipe section made (from the front cats the the rear mufflers), this will eliminate the 3rd cat, and the 2 resonators. I'm sure it'll be plenty loud for those wanting the sound of an aftermarket system, but the main this is it'll have all the performance gains any true cat-back will have, at a fraction of the cost.

Obvously i'm going to track test various things, so we'll see. Maybe next week I'll do a couple runs with the mufflers removed, then a couple with the mid pipe removed (so that just the maniflds and cats are on the car)....