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Thread: 3" down pipe for 1.8t 150bhp

  1. #1
    marshall-12's Avatar
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    3" down pipe for 1.8t 150bhp

    hey guys thinking about purchasing one of these:
    AUDI A3 96-03 20v 1.8T TURBO EXHAUST DOWN PIPE DECAT | eBay
    Just wondering, does the car need to be mapped to run this properly?
    im new to a petrol turbo so i need to ask these things lol

    does it fit straight on to a standard cat back? i will get an s/s cat back at some point, but if i need an s/s cat back now i will hold off.
    is it to hard to fit? doesnt really look it but i'll ask anyway.
    Im just after a bit of noise and hopefully a small gain in performance too.

    Also, im unsure if these 2 can actually be linked together, but if i fitted this, and put a cone filter on will the decat power increase, help lose the flat spots the cone filter does on standard map?
    UpperClass Nerds ..

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  3. #2
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    Looks like the de-cat reduces down to the same size as standard system

  4. #3
    Markeyboy's Avatar
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    as above, the DP reduces down to the std exhaust size, i also needed a exhaust clamp to join the two

    it makes the turbo spool up much faster and seemed to make a noticeable difference on mine,
    you may throw up a lamda fault if you have 2 sensors, one pre and post cat

    to get the most performance from it get it mapped, well worth the money imo

    1.8T SPORT AUM
    18" TTRS wheels, de-badged grill, tints, TIP, forge 007P, toyo sports oil catch can,
    3" downpipe + decat, Toyosports FMIC, 10mm lowering cups, N249 bypass
    S3 Front Brake Setup, R-Tech stage 1.5 custom remap 218BHP@229FT/LB

    Progression Thread
    http://www.audi-sport.net/vb/a3-s3-f...8t-thread.html



  5. #4
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    Quote Originally Posted by Markeyboy View Post
    as above, the DP reduces down to the std exhaust size, i also needed a exhaust clamp to join the two

    it makes the turbo spool up much faster and seemed to make a noticeable difference on mine,
    you may throw up a lamda fault if you have 2 sensors, one pre and post cat

    to get the most performance from it get it mapped, well worth the money imo
    Do u have this one then was thinkin of gettin this myself.

  6. #5
    Jay A3's Avatar
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    Same one I have got ready to go on. I havent heard anything bad about these also spoke to rtech about it and they seemed to agree tht it's worth it.
    <Jay A3 build thread>



    241bhp K03s - R Tech

  7. #6
    deeman88's Avatar
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    Yeah that's an easy to put on kit, just need wiggle it in proper. I got the exact one and as mentioned above it reduces down to the standard exhaust size meaning you can get whatever system after the decat, it makes the turbo spool quicker, gives the car a slightly deeper tone! Well worth it.
    My Build Thread... Nothing too special


    Mods: ASN Sticker on Rear Driver Window, Forge 006, KO3s Turbo, Silicone TIP, 3inch Downpipe, Decat, FK Coilovers, Bosch Aero Retrofits, NGK 6458 Sparkplugs.

    To do : Front and Rear 25mm ARB, Strut Brace, Adjustable Droplinks, Poly Red DogBone, Remap, FMIC... to be completed


  8. #7
    Jay A3's Avatar
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    Does it weld into original pipe or does it go over like a sleeve?
    <Jay A3 build thread>



    241bhp K03s - R Tech

  9. #8
    Customboy's Avatar
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    Straight fit with mine and connected GReat to my current Scorpian exhaust system made the car tons better !!
    deeman88 likes this.
    p

    THE BLUE BEAST, TAKEN FROM ME, GONE BUT NOT FORGOTTEN
    RTECH STAGE 2 REMAP NOW RUNNING 223 BHP AND 253 FTLB OF TORQUE,
    SUBARU IMPREZA WRX ESTATE SOON TO BE RUNNING 340 BHP
    ANTI LAG/LAUNCH CONTROL/MAF LESS/ LOVE IT !!

  10. #9
    deeman88's Avatar
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    Its the same width mate and ends where the midsection starts. So you can either weld or get a clamp that goes over and tighten it well tight < like I did. sounds good and get it already!!!ol
    My Build Thread... Nothing too special


    Mods: ASN Sticker on Rear Driver Window, Forge 006, KO3s Turbo, Silicone TIP, 3inch Downpipe, Decat, FK Coilovers, Bosch Aero Retrofits, NGK 6458 Sparkplugs.

    To do : Front and Rear 25mm ARB, Strut Brace, Adjustable Droplinks, Poly Red DogBone, Remap, FMIC... to be completed


  11. #10
    Prawn's Avatar
    My other car is a MINI!!!!

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    what year is your car? or more importantly, engine code if you know it?

    Trouble free fitment on an AGU, but on an AUM you'll get an engine management light after a few days.
    -------------------------------------------------------------------------------------------------

    Prawns TFSI Turbo'd 1.8T Track Car

    But I know nothing so ignore me.

 

 

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