Has anyone actually been slapped with a fine for installing an aftermarket Downpipe? - Page 2
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This is a discussion on Has anyone actually been slapped with a fine for installing an aftermarket Downpipe? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; im thinking my next step is a downpipe.. should i hollow out the cat? if so, how?? pardon my lack ...

  1. #16
    Registered User JDMsoul's Avatar
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    im thinking my next step is a downpipe.. should i hollow out the cat? if so, how?? pardon my lack of knowledge.. im new to Subies and turbo engines...

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    another question.. what are the benefits of a 3" downpipe?

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    Quote Originally Posted by Mikie13 View Post
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    Quote Originally Posted by JDMsoul View Post
    another question.. what are the benefits of a 3" downpipe?
    If you get a divorced downpipe it reduces turbulence from the waste gate In turn means a quicker spool

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    Quote Originally Posted by JDMsoul View Post
    im thinking my next step is a downpipe.. should i hollow out the cat? if so, how?? pardon my lack of knowledge.. im new to Subies and turbo engines...
    Follow the link in my signature for information. All answers there. Good luck.
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  7. #21
    Registered User JDMsoul's Avatar
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    Thanks fellas...

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    Quote Originally Posted by JDMsoul View Post
    im thinking my next step is a downpipe.. should i hollow out the cat? if so, how?? pardon my lack of knowledge.. im new to Subies and turbo engines...
    Quote Originally Posted by JDMsoul View Post
    another question.. what are the benefits of a 3" downpipe?
    Generally you replace the downpipe with an aftermarket option (should be catted if using a Cobb Accessport). Then you add Stage 2 Engine management whether it's a Cobb Accessport, Opensource, purchased E-Tune, etc. No hollowing of a cat is necessary considering you're replacing the downpipe.
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    Pro Manscaper Mikie13's Avatar
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    Quote Originally Posted by JDMsoul View Post
    im thinking my next step is a downpipe.. should i hollow out the cat? if so, how?? pardon my lack of knowledge.. im new to Subies and turbo engines...
    Quote Originally Posted by JDMsoul View Post
    another question.. what are the benefits of a 3" downpipe?
    Generally you replace the downpipe with an aftermarket option (should be catted if using a Cobb Accessport). Then you add Stage 2 Engine management whether it's a Cobb Accessport, Opensource, purchased E-Tune, etc. No hollowing of a cat is necessary considering you're replacing the downpipe.
    The Hawk-Eye Alliance #90|The Blobeye Syndicate #0|The Stink-Eye Mob #0|N.E.R.D. Founding Member & #3
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    ProcessWest TMIC Cobb SF Intake w/airbox Invidia Catless Downpipe Invidia Q300 Catback Kartboy Short Shifter
    OpenSource tuned by: Matty @ WTF Tuning

  10. #24
    Registered User JDMsoul's Avatar
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    Quote Originally Posted by Mikie13 View Post
    Generally you replace the downpipe with an aftermarket option (should be catted if using a Cobb Accessport). Then you add Stage 2 Engine management whether it's a Cobb Accessport, Opensource, purchased E-Tune, etc. No hollowing of a cat is necessary considering you're replacing the downpipe.
    Thanks for the info... Does it matter of its divorced vs non when doing this?

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