Thread: Downpipe w/Cat

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  1. #1 Downpipe w/Cat 
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    Need a new cat so I'm just gonna replace the downpipe as well as the entire exhaust...was looking at the ZZP 2.5" bolt-on 304SS as I want it to last...I have bought a few things from PFYC in the past and was wondering why the huge price difference in the ZZP ($230) vs the Random Technology DP they offer ($436)????
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  2. #2 Re: Downpipe w/Cat 
    The Blue One blueguy's Avatar
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    Because PFYC is overpriced...always has been. Plus, the RTDP SUCKS teh ballz.

    Get the ZZP one...might as well get the 3 incher too...while your there it wouldn't hurt.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  4. #4 Re: Downpipe w/Cat 
    SE Level Member prixgt01's Avatar
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    Quote Originally Posted by Bio248 View Post
    dont buy a 2.5" downpipe. you'll regret it.
    As a noob to the grand prix world, why not a 2.5 and why would he would regret it? just trying to learn so when its my turn for exhaust im a step ahead
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  5. #5 Re: Downpipe w/Cat 
    GrandPrix Junkie CTKGP09's Avatar
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    http://www.grandprixforums.net/f17/e...tup-19162.html

    heres a thread i started when i had these questions... hope it helps
    '04 Chevy Silverado LT 4x4 - intake, headers, full exhaust, zo6 cam, 799 heads, tune, leveled, 33's
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  6. #6 Re: Downpipe w/Cat 
    The mod from over yonder TheOtherNick's Avatar
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    Quote Originally Posted by prixgt01 View Post
    As a noob to the grand prix world, why not a 2.5 and why would he would regret it? just trying to learn so when its my turn for exhaust im a step ahead
    The 3" will allow more flow out of the manifolds, the rest of the cat back is not that restrictive.
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