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Author Topic: Decat & downpipe question  (Read 7450 times)

Offline AD1.8T

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Re: Decat & downpipe question
« Reply #10 on: 14 April 2013, 16:09 »
Aum or auq as hes got an 2002 golf i do think its abit hit an miss whether it likes it or not.

Back to one of my questions as no ones mentioned that .... Is it just a light that comes on or does it throw a wobbler/limp mode ect ?
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Offline beppe2672

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Re: Decat & downpipe question
« Reply #11 on: 14 April 2013, 16:45 »
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1999 1.8t AGU, KNN Panel filter, Smoothed air box, Custom CAI, Forge 007 dv, REVO stage 1, 3" eBay TBE. Audi TT quickrack.

To come - A DIY hybrid K03 and a whole lot of supporting mods!

Offline davemk4

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Re: Decat & downpipe question
« Reply #12 on: 14 April 2013, 17:30 »
No limp mode it still drives 100% normal. Spacer will work fine. I went custom as they made it flange fitting. Complete with sports cat. So mot time 4 nuts and pop cat in then back to decat after. It also better as has no reducing parts 3" all way straight to my jetex cat bk
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2001 mk4 GTI 1.8t AUM. k&n induction kit with customer heat shield, 3'' TIP, Forge 007P, Stage 1 map, N249 bypass, 3'' downpipe and decat, 2.75'' Jetex cat back non res, Koni shockers and H&R springs 35mm, dimpled and grooved disks front and back

Offline AD1.8T

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Re: Decat & downpipe question
« Reply #13 on: 14 April 2013, 17:43 »
Sweet lets just hope it behaves then ! Anybody running what i will have ? So 3 d/p decat to a diesel non resonated centre then standard back box ? Any videos ? I really really dont want it to be raspy/tinny !
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Offline davemk4

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Re: Decat & downpipe question
« Reply #14 on: 14 April 2013, 18:05 »
I have 3" dp with 2.75" jetex cat back the back box is bigger than oem and it sounds lush. Not tinny or droney dont know how yours on oem back will sound though
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2001 mk4 GTI 1.8t AUM. k&n induction kit with customer heat shield, 3'' TIP, Forge 007P, Stage 1 map, N249 bypass, 3'' downpipe and decat, 2.75'' Jetex cat back non res, Koni shockers and H&R springs 35mm, dimpled and grooved disks front and back

Offline dom

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Re: Decat & downpipe question
« Reply #15 on: 14 April 2013, 19:00 »
Quote from: GTi_James on 14 April 2013, 15:58
Quote from: dom069 on 14 April 2013, 15:25
I'm running 3" downpipe & decat and have been for about a year, I've had no problems with warning lights etc. To join it to a standard cat-back system will be an issue, most 2.25" pipe won't flare to 3" so you'll struggle to get a reducer made up that doesn't involve you chopping into your centre pipe.

what type engine you running? AUM's are picky to say the least, i should be doing this end of the month hopefully!

AUM :wink:

Quote from: AD1.8T on 14 April 2013, 15:56
See theres this one which says end pipe fits to 2.5" and 2.25" so that will go straight on ?

Item number 150832272345

It depends on the diameter of your decat, if it's a true 3" then you'll still need a 2.5" - 3" reducer, if it's a 3" decat which reduces to 2.5" (which is likely) then you shouldn't have any problems :afro:
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