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#1
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exhaust system question
hey guys,
im just about to order some exhaust parts for a custom cat back system for my svx. I looked at a bunch of people on the forum and what they did for exhaust and here is what i am thinking. From the headers two Dynomax Magnum Glasspack Mufflers, 2.5 in/out to a magnaflow 2.5 in/out y pipe to another Dynomax Magnum Glasspack Muffler, to a high flow 2.5 in/out cat, and finally to a crossflow dynomax 2.5 in/2.25 out muffler. Im going to take it a good shop that will custom bend me the pipe and throw up everything in there. Does that parts list sound good? Any last minute ideas before i order in the next few days? Thanks! |
#2
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#3
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Exhaust set up
Hey Budfreak, your system sounds nice but what was its $$$? My local exhaust guy said IF he did a custom job, but he did not really want to mess with it, he would charge about $2000. He said it was "a plumbers nightmare". He fixed a small leak for me in the front gaskets to the cats for $180 parts and labor. He said he had to be real careful because some of the pipe was thin and weak.
By the way, I'll send pics to you of your old spoiler on my 92. Put it on this weekend. Looks great, thanks. Fred |
#4
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I agree...definitely don't go so large immediately after the header. 2" is probably as large as you want to go in that area. I'll leave the rest to the guys who have tried multiple setups.
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Time for my very own long list of mods: 92 SVX LS-L - Ebony Pearl - 2002 WRX 5MT trans w/STi gearset (rebuilt & installed myself ) - BMW E46 HID retrofit - Kenwood Headunit - Phoenix Gold 75x4 RMS amp - Alpine Type R 6.5" front components - Alpine Type R 6x9 3way rear speakers - 18"x9" Rota G-Force wheels w/225/40ZR18 Toyo T1R's - Mychailo's custom springs - Urethane front & rear sway bar bushings - KC exhaust (2.5" dual magnaflow) - Escaine seat swap - Removed Spoiler I don't care if Subaru says it's STI...it will always be STi to me |
#5
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Unless you are going to run NOX, S/C, or a turbo, 2" OD/1,7/8" ID is fine for the headpipes, and 2, 1/4"-2,1/2" for the rest does not impede gas flow.
I prefer strait through resonators, rather than chambered mufflers. And the stainless steel "Ultra Quiet Design" resonators from Verocious Motorsports do a GREAT job of quieting things down.
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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 |
#6
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Glad to hear the spoiler is alive and well again. Glad I could help. I paid 70 bucks for my muffler and 60 for my cat from performancepeddler. Call them for the best prices.Look in my budfreak1 locker for pics of it. Svxfiles put it together for me. He still has the muffler and I'm just waiting for him to put it together so it will bolt up. I'm running a stock muffler right now. Find a cheaper exhaust guy.(Svxfiles comes to mind) For the money you'll save it would be worth the drive. Waiting for pics. Jason |
#7
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That exhaust guy is full of it. I had a complete header-back exhaust built with mandrel bends and top-of-the-line stainless steel exhaust parts, and the total cost was $1200 including labor.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#8
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am i going to see a big difference between using a resonator or a glasspack muffler to quiet the exhaust down in terms of performance or exhaust flow? Also thanks for the tips so far, i think i may now go, 2, 2" glasspacks into a y pipe, then a 2.5 " glasspack, to a high flow cat, and then to 2 dynomax or magnaflow mufflers, im looking to do a system real similar to mbtoloczko, you can check out his system in his locker http://www.subaru-svx.net/photos/user.php?mbtoloczko, thanks!
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#9
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just wonder...
I think of : anybody ever dynoed an exhaust before and after??? I think i'll do it this summer, i'll have to find a dyno near my location, like Montréal. Could be interresting ? no ? So maybe I could play with the sonic wave or scavenge effect....humm....
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Nightmare is the name of the car... |
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