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  1. #1
    Colly's Avatar
    The Tangerine Machine

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    S3 Exhaust on a budget

    I have just bought a Pipeworx 3” Downpipe and Decat for my S3 I want to fit this to my OEM exhaust as an aftermarket cat back is out of the question simply cant afford.
    Can the downpipe and decat be easily mated to the oem exhaust by any exhaust place?
    Also I was wondering would there be any advantage of removing either the two mid boxes and just having the rear box or just removing one and having the two boxes or would this be too loud?
    Thanks
    Sold 03 S3 Audi Exclusive Papaya Orange,
    New Car 05 Evo VIII FQ 340 MR 415bhp 400ftlbs

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  3. #2
    3rd Gear

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    I was thinking the same

  4. #3
    superkarl's Avatar
    MAN OF STEEL

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    1) The 3 inch decat should taper down to 2.5 for the catback
    2) The oem catback has one mid box and one backbox, removing the mid box might change the sound a little, not by much though

  5. #4
    Westy's Avatar
    Double Dark Side! Diesel & 8P

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    The main restrictions on the OEM exhaust system are the DP and cat. The backbox, resonator, and flat pipe section before the backbox wont be too restrictive until you start pushing stage 2 power and boost. The better the exhaust can get rid of the gasses the lower the EGTs and the better the engines performance.
    8P A3 TDI - 220bhp - 335lbft
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  6. #5
    Colly's Avatar
    The Tangerine Machine

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    thanks guys i will be going for stage two im just collecting the parts at the moment.
    might it be an idea to get a custom centre section made up?
    Sold 03 S3 Audi Exclusive Papaya Orange,
    New Car 05 Evo VIII FQ 340 MR 415bhp 400ftlbs

  7. #6
    Westy's Avatar
    Double Dark Side! Diesel & 8P

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    Quote Originally Posted by Colly View Post
    thanks guys i will be going for stage two im just collecting the parts at the moment.
    might it be an idea to get a custom centre section made up?
    I looked into cutting up the OEM box and fitting custom mid sections and all sorts but it will work out easier and cheaper if you just keep your eyes open for 2nd hand cat back systems for sale. I've seen a few Milteks go for £250 on eBay, including the one I fitted to my car.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  8. #7
    Colly's Avatar
    The Tangerine Machine

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    thanks Westy does the exhaust off any other vag cars fit?
    Sold 03 S3 Audi Exclusive Papaya Orange,
    New Car 05 Evo VIII FQ 340 MR 415bhp 400ftlbs

 

 

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