MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Performance Modifications => Topic started by: Jaywoo-GTI on April 20, 2011, 08:47:38 am

Title: De-cat Downpipe Help.
Post by: Jaywoo-GTI on April 20, 2011, 08:47:38 am

Does anyone know where i can buy a de-cat downpipe?
I dont want a high flow cat system as have no need for a cat and have seen better gains with a full de-cat.

Post up with some links please.

Title: Re: De-cat Downpipe Help.
Post by: E30Dom on April 20, 2011, 11:53:18 am

Quote from: Jaywoo-GTI on April 20, 2011, 08:47:38 am

I dont want a high flow cat system as have no need for a cat and have seen better gains with a full de-cat.

Is it a track only car then? There's loads on ebay...

Title: Re: De-cat Downpipe Help.
Post by: Jaywoo-GTI on April 20, 2011, 12:55:11 pm

I doing a couple of track days at the end of the month and want to get it mapped to suit, then i can just drop it on when i change me wheels over.

But thanks for the input

Title: Re: De-cat Downpipe Help.
Post by: keano on April 20, 2011, 01:46:35 pm

Your best off just having a custom exhaust place chop the cat out and weld in a straight pipe.

That's what I did I would do  :grin: I only paid My super guessing brain tells me it'd cost £40

Title: Re: De-cat Downpipe Help.
Post by: Jaywoo-GTI on April 20, 2011, 03:44:23 pm

Where did you would you suggest to have it done Keano?

Title: Re: De-cat Downpipe Help.
Post by: keano on April 20, 2011, 04:41:35 pm

There is a place called Topgear Performance in Doncaster.

They are a PowerFlow franchise.  :happy2:

Title: Re: De-cat Downpipe Help.
Post by: berg on April 21, 2011, 09:50:34 pm

you can get the pipewerx de cat from awesome now, or go straight to Jeff @ pipewerx and he will prob fiit for VAT off list price  :happy2:

Title: Re: De-cat Downpipe Help.
Post by: Janner_Sy on April 21, 2011, 11:14:32 pm

alternatively you do what Jon-TFSI has done and get the std downpipe, get it cut open, de-cated and re-welded (£60 in my case).  Jon made the same power as all the other guys did with their full TBE, but with a £1000+ saving

Title: Re: De-cat Downpipe Help.
Post by: keano on April 21, 2011, 11:53:00 pm

 :happy2: :happy2:

Did john have the pre cat out too?

Title: Re: De-cat Downpipe Help.
Post by: Janner_Sy on April 21, 2011, 11:56:59 pm

the whole lot iirc.  have a look at his build thread

Title: Re: De-cat Downpipe Help.
Post by: PDT on April 23, 2011, 03:58:39 pm

I have a used Milltek full decat downpipe sitting upstairs somewhere, pm me and I will dig it out  :happy2:

Title: Re: De-cat Downpipe Help.
Post by: tony_danza on April 23, 2011, 04:06:01 pm

I got my 3" direct from Milltek, having seen some of the crap peddled on ebay and the like, it was well worth the (way less than half a sportcat DP) money.

They will ONLY sell you one for a track/race car.  :wink: Revo did me a track map to suit. 

If I were doing it again, and on the cheap, I'd consider whipping the cerntrebox, pre-cat and cat off and having them rewelded. DP = power. Exhaust = sound.

Title: Re: De-cat Downpipe Help.
Post by: Janner_Sy on April 23, 2011, 07:29:21 pm

Quote from: tony_danza on April 23, 2011, 04:06:01 pm

If I were doing it again, and on the cheap, I'd consider whipping the cerntrebox, pre-cat and cat off and having them rewelded. DP = power. Exhaust = sound.

My fabia is having that done now

Title: Re: De-cat Downpipe Help.
Post by: 56OctyVRS on May 02, 2011, 10:32:22 am

Saw your car Sy,  looks sweet in white!  Are you going to fit a Sports cat when it comes to MOT time?

Title: Re: De-cat Downpipe Help.
Post by: Janner_Sy on May 02, 2011, 10:45:55 am

i have a spare std downpipe so will swap it as and when required