Dual pipes?

glassjaw · Post by **glassjaw** » Tue Sep 28, 2004 6:26 am

I know I am making many new posts regarding upgrades... but my new job is going to start paying a lot better soon, and I want my Subaru to run better too!

Would running two pipes, one from each head offer much of a performance increase? I assume it would sound totally kickass from behind, with some dual chamber mufflers or less.

I could probably have a local pipe bender do it for not much more than a few hundred $$$, including the mufflers, and dual "cats

".

evolutionmovement · Post by **evolutionmovement** » Tue Sep 28, 2004 6:37 am

Difficult packaging with the second muffler unless you have them both come out the same side.

Steve

glassjaw · Post by **glassjaw** » Tue Sep 28, 2004 6:43 am

They would have to come out on each side for the sound

.

I will look into it a bit more, just wanted to see if anybody had personal experience with this.

Post by **Legacy777** » Tue Sep 28, 2004 2:47 pm

You'd have to make the piping be a bit smaller, or you're going to lose too much velocity, and it's just not going to yield any gains.

I had a buddy in memphis who had true dual exhaust on his SVX. It was a little raspier, but sounded pretty good.

BAC5.2 · Post by **BAC5.2** » Tue Sep 28, 2004 3:39 pm

Josh has got it!

You'd have to run 1" pipes from each side (and have a connecting bit to make sure flow is even).

Probably would sound pretty cool, but a straight pipe will sound pretty cool too

evolutionmovement · Post by **evolutionmovement** » Tue Sep 28, 2004 5:22 pm

Yeah, you'll lose scavenging properties on a large exhaust with only 2 cylinders.

Steve

white_n_slow · Post by **white_n_slow** » Sun Oct 31, 2004 2:04 am

it may be helpful to use a dual-pipe muffler... one muffler with two cores running through it. I'm not very familiar with the underside of legacies, but that would probably be the easiest way to package a dual exhaust.

there are a few companies that sell them... magnaflow, burns stainless, probably some others too.

93Leg-c · Post by **93Leg-c** » Thu Nov 04, 2004 9:54 pm

If you want your Suby to run better, don't go with two separate pipes. You're going to regret it. When I was into air-cooled VW Bugs, the 4-into-1 header setup was the best. All those that went to the 2-into-2 setups (like dunebuggies) regretted it. It made their Bugs run worse, noticeably worse. Less power, less torque, less gas mileage, but MORE frustration!

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Dual pipes?

Dual pipes?