#102161, "should i get a custom 2.5" or 3" exhaust?" Dec-12-07 03:52 AM by 95eclipseSlow
Should i get a full 3" exhaust or go with the 2.5"? it is going to be a custom exhaust. Im sure my turbo will spool alot faster with a 3" dp and a full 3" exhaust right? Will my car still run good since there wont be much back pressure? I am only running 7psi.
#102163, "RE: should i get a custom 2.5" or 3" exhaust?" In response to Reply # 1
If you have the choice, go 3". It does cost more and takes up more room in the bay, but if you can get it to fit good, it is worth it.
Mike D -------------------------------------------------------------------------------------------------
Originally posted by DR1665 You're welcome to all the beer you can drink, but you have to go get it yourself. Don't get pissy when we point to the fridge and tell you to get it yourself.
#102164, "RE: should i get a custom 2.5" or 3" exhaust?" In response to Reply # 2
i went to mr. muffler today and they tried telling my that a 3" wouldnt fit over my rear axle. Then i asked him if the TIG welded the exhaust and he said no so i laughed and then left.
#102167, "RE: should i get a custom 2.5" or 3" exhaust?" In response to Reply # 3
Originally posted by 95eclipseSlow i went to mr. muffler today and they tried telling my that a 3" wouldnt fit over my rear axle. Then i asked him if the TIG welded the exhaust and he said no so i laughed and then left.
did you tell him you don't have rear axles?
I contributed to the Wiki! EVO IX - just a really expensive boost gauge and a K&N air filter 96 Eclipse RS -awaiting registration and inspection 95 Eclipse GS - parts car Mods/Profile - http://www.2gnt.com/index.php?d=cs82685
#102170, "RE: should i get a custom 2.5" or 3" exhaust?" In response to Reply # 4
Most places won't TIG weld exhausts. You can't TIG weld within 20 feet of your car or else your electronics will be fried.
Mike D -------------------------------------------------------------------------------------------------
Originally posted by DR1665 You're welcome to all the beer you can drink, but you have to go get it yourself. Don't get pissy when we point to the fridge and tell you to get it yourself.
#102222, "RE: should i get a custom 2.5" or 3" exhaust?" In response to Reply # 5 Dec-17-07 09:53 AM by turbo8u
Originally posted by totaleclipse_05 Most places won't TIG weld exhausts. You can't TIG weld within 20 feet of your car or else your electronics will be fried.
this isnt true. if you're going to weld on the car, disconnect the battery and pump the brake pedal a few times. keep the ground clamp close if youre really paranoid and dont run the connection through any bearings or anything (ie welding a 4 link bracket on a rear diff)
I can make you a 3" catback and TIG weld it. Aluminized steel or stainless, take your pick.
edit: your car does not need back pressure to run. back pressure is all bad. however, the disadvantage of running larger exhaust is the speed at which the exhaust gas will move is slower. high engine speeds and lots of boost 3" is ideal. ~10psi daily driven (300-350whp) 2.5" is my preference. there are advantages and disadvantages to running 2.5" vs 3". My car made 400whp with 2.5". what are your goals?
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96 Black ESi 91 Red TSI AWD (RIP) 02 WRX
"turnin wrenches for nine hours in the pouring rain, just to get the beast up and running again"
Aerospace Certified TIG welder for Precision Castparts in Portland, OR.
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