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downpipe size question

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Old Oct 16, 2008 | 12:40 AM
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Default downpipe size question

will a 3" downpipe fite the stock spipe
Old Oct 16, 2008 | 02:48 AM
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Old Oct 16, 2008 | 02:54 AM
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Not w/o some sort of adapter I would imagine
Old Oct 16, 2008 | 03:04 AM
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why would you have a 3" dp to the stock s-pipe?
Old Oct 16, 2008 | 03:06 AM
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it comes with the kit....and i dont have the money so a new spipe

im looking at the dp and it looks as if the previous owner didnt use a donut gasket which is prob why it fit becaue the sock header uses the donut gasket that makes the pipe noe 3inches
Old Oct 16, 2008 | 03:09 AM
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not sure if it'll fit, i say your better off going open-dump, what kit is it?
Old Oct 16, 2008 | 03:21 AM
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its a zpi sage 1...but i have a 5lb spring so itll be a stage o with intercooler....and i have no prob running open downpipe lol...i mean after a while i might get a spipe or something to quiet it down so i dont get pulled over
Old Oct 16, 2008 | 03:23 AM
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i'd recommend either getting a turbo-back exhaust either ptuning or a custom one, i'm getting a custom one done because it's going to be cheaper for me

5lb spring as far as wastegate you mean? honestly, if its stage 0 with low psi then you really don't need a 3" dp...
Old Oct 16, 2008 | 05:33 AM
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^^ thats what he have lol, 3" wouldnt hurt.. im not so familiar with stage 0 zpi, but if stage 0 zpi dont come with spipe, then it should fit the stock spipe, but what flange does your downpipe have?
Old Oct 16, 2008 | 12:07 PM
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its a 4bolt to the turbo i think....but the flange for the spipe is the normal 2 bolt
Old Oct 16, 2008 | 12:41 PM
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ZPI kits did not come with a 3 inch downpipe, so the previous owner must have had one made.
Old Oct 16, 2008 | 01:10 PM
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yea travis he made this stage 1 kit him self i notgiced this when the 16g was clocked downwards and the intercooler piping was routed different insted of jpiped...and it had a open dump didnt think zpi ran open dump....all in all i think the 3inch will fit if i dont use a gasket
Old Oct 16, 2008 | 01:49 PM
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ZPI ran an Open dump as in wastegate, but now open Downpipe. Hell I might do that myself until I get a new s-pipe. My Downpipe and S-pipe were built as one. Less chance for a leak between turbo and exhaust, but makes it more difficult to work around.
Old Oct 16, 2008 | 02:01 PM
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i kinda need emmisions some day

ill run it open downpipe for a bit
Old Oct 16, 2008 | 02:20 PM
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Blah...who needs emissions...ehehee
Old Oct 16, 2008 | 02:53 PM
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lol yea emissions... who needs those lil stickers..
Old Oct 16, 2008 | 02:56 PM
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You get stickers? I'm jealous! We don't get stickers.
Old Oct 16, 2008 | 03:05 PM
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haha no we dont get stickers but some do thats why i said it
Old Oct 17, 2008 | 03:51 AM
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3" on a 16g is over kill... You'll have to thermowrap 3/4's of the exhaust pipe to keep the egt up enough to maintain flow...

But in the area of nice sound, and hearing a lot of turbo spooling, the 3" does come in handy.
Old Oct 17, 2008 | 01:50 PM
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a custom exhaust, 3inch from downpipe back should run you about 500, i'd so try that out
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