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#1
05-12-2012, 04:09 PM
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Manifold back exhaust
Well my exhaust is completely shot the full way. So it's getting hacked off. Going to build a custom. I've gone through the videos on youtube. Got some ideas from them.
My idea is based off of this guy http://www.youtube.com/watch?v=UGDu4yh_QQw. His exhaust diagram: http://www.seccs.org/gallery/Car%20P...e_as_built.jpg What I would like to do is no precats, change the Glass pack to a SLP Loudmouth resonator. Not sure if you guys are familiar with them. They are making some really nasty sounding exhaust with the V8 guys... Wanted to give a shot with boxer motor.. He says just a generic bullet camaro muffler. I'm looking into the realm of Magnaflow. What series are you guys running? It's going to be a few weeks to build up the money... but will keep you guy posted. 
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#2
05-12-2012, 06:08 PM
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Re: Manifold back exhaust
2.5" is far too large for the pipes/tubes off of the factory header with a stock engine.
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www.svxfiles.com The first SuperCharged SVX,  the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway  Fiberglass Hood thread My locker 4.44 Swap link
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#3
05-12-2012, 06:22 PM
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Re: Manifold back exhaust
What Tom says. 1-3/4 to 2" is fine for the pre-cat pipes on a stock SVX, merging into a 2.5" mid-pipe. The smaller tubing also makes routing easier, as the bends are tighter.
Here's what I did with mine. I haven't done a sound clip, but it sounds good. http://www.subaru-svx.net/forum/showthread.php?t=51867   I'll probably sell this one in a year or so and build a new version in stainless, with a resonator and flanges or v-bands all around. Need to get a MIG for myself first. I have a flux core welder, but it's a pile.
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Chris 92 Ebony Mica LS-L "A Rolling Restoration": 223,250 KM - Sleeping 2007 STi 6MT, Stance GR+ coilovers, PWR Rad, JDM hood badge, svxfiles 6000K HIDs, JDM Clear Corners, $15/15 min mod, $20/20 min mod, Energy Swaybar Bushings, Hella Supertones horns, Gold STi BBS rims, Group A lightweight crank pulley, A/C system removed, Custom header-back exhaust, Hybrid carbon/metal rear sway bar, restored headlights with CCFL halos 2008 Subaru Legacy Spec B - Diamond Grey Metallic - Sold 2020 Ram 1500 Longhorn - Red Pearl
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#5
05-13-2012, 02:04 PM
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Re: Manifold back exhaust
Quote:
Cut off the 1.61" diameter factory pipes/tubes and replace them with 2" mandral bends. In Allegheny CO. you are surely subject to PA emission laws. 
__________________
www.svxfiles.com The first SuperCharged SVX, the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway Fiberglass Hood thread My locker 4.44 Swap link
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#6
05-13-2012, 02:32 PM
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Re: Manifold back exhaust
1.Precats... Reason being money..
2. Yeah 2" seem to be the best bet. Running right into a Magnaflow 94007 cat. Seems to be the ticket. 3. lets just leave the rules out for now..
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