down pipe - Subaru WRX Forum
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#1 Old 08-09-2008, 07:30 AM
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down pipe

i see all this talk bout down pipes an how there is boost creep i have say 400 so thats not enough for a catted dp. should i save n wait to get a catted or a catless dp is fine, and if so any ideas of what kind. thnks
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#2 Old 08-09-2008, 09:18 AM
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This is what I use and it's not $400:

Helix V3 Catted downpipe.

Give gruppe-s a telephone call though and make sure they actually have it in stock before ordering. Their backorders can take forever.

04 STi 16G powered lagless fun
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#3 Old 08-09-2008, 11:59 AM
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#4 Old 08-10-2008, 04:03 AM
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it's kinda up to you. a high flow catted d/p will work just fine up to some high h/p #'s. a catless d/p will be louder and make the people behind you nauseous at a red light. boost creap is an issue because the wastegate cannot react fast enough to the amount of gases that are flowing through due to the larger then stock d/p. forms of e/m can help this and also so can porting the wastegate or getting a larger wastegate flapper.
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