back pressure on stock CAT and Muffler
Thread Starter
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Member
Joined: May 2009
Posts: 83
From: Oversea
back pressure on stock CAT and Muffler
which one of them create most back pressure?
1) stock CAT
2) Stock Muffler
3) piping
Because i want to remove either one of them as i don't want lost too much back pressure
1) stock CAT
2) Stock Muffler
3) piping
Because i want to remove either one of them as i don't want lost too much back pressure
Member
Joined: Sep 2008
Posts: 622
From: Québec city
I would say Muffler, Stock Header, Cat, Piping in hat order from the worse to the better...Check my post here!https://www.fitfreak.net/forums/fit-exhaust-systems/47856-axle-back-vs-catback.html!
Last edited by DOHCtor; Nov 4, 2009 at 11:53 AM.
Member
Joined: Feb 2007
Posts: 548
From: Flint, MI
I'd say the piping. I have my stock midpipe in my coat closet in my apartment and every time I look at it I go 
The piping is like < 1.75" ID and there's so many bends it looks like a 2 year old made it. You'd probably have trouble using it as a drinking straw.
Not that the L15 flows a whole lot of air in stock trim anyway, but that is easily fixed with a little turbine goodness.
The piping is like < 1.75" ID and there's so many bends it looks like a 2 year old made it. You'd probably have trouble using it as a drinking straw.
Not that the L15 flows a whole lot of air in stock trim anyway, but that is easily fixed with a little turbine goodness.
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