MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Performance Modifications => Topic started by: Ant b on November 08, 2017, 06:57:36 pm

Title: Downpipe fitting
Post by: Ant b on November 08, 2017, 06:57:36 pm
Hello I’m going to attempt fitting my 3” decat tomorow on to my stock cat back for now,how fidderly of a job is it on the drive.
Also has anyone got a 3” decat on a stock car back
Title: Re: Downpipe fitting
Post by: Shoy1980 on November 08, 2017, 07:31:47 pm
Hi, I have a 3" BCS downpipe with a stock cat back. R5GTT from here fitted mine. It went on without any hassle to be honest. I think you only run into problems if your nuts/bolts are ceased.
Title: Re: Downpipe fitting
Post by: Ant b on November 08, 2017, 10:42:37 pm
Yeah that’s the worst bit I think
Title: Re: Downpipe fitting
Post by: Shoy1980 on November 08, 2017, 10:46:08 pm
Make sure you buy new nuts/bolts and a gasket.
Title: Re: Downpipe fitting
Post by: Ant b on November 09, 2017, 09:57:49 am
It has new nuts and bolts and gasket with it
Title: Re: Downpipe fitting
Post by: neilw on November 09, 2017, 10:20:07 am
I did mine on the drive by myself to remove the pre-cat. It's awkward, but would be easier if I did it again. Getting to the bottom two turbo bolts is fiddly, but ok if you've got a good selection of tools. One of them is easier to get too from underneath. Some people have trouble getting the turbo bolts off and snap the studs, however, mine where fine.

My clamp at the back was annoying as the nut was facing the top of the car and rusty, so again hard to get to and then free up.

Then I had trouble disconnecting the O2 sensor. It probably took me the best part of 4 hours, removing and replacing.

The bolts were fairly expensive from TPS about £5 each I seem to remember. 
Title: Re: Downpipe fitting
Post by: r5gtt on November 09, 2017, 01:07:47 pm
Quote from: Shoy1980 on November 08, 2017, 07:31:47 pm
Hi, I have a 3" BCS downpipe with a stock cat back. R5GTT from here fitted mine. It went on without any hassle to be honest. I think you only run into problems if your nuts/bolts are ceased.
Ramp made life a lot easier as I wouldn't do one off the floor as that's just being  :stupid:  :signLOL:
Title: Re: Downpipe fitting
Post by: Ant b on November 09, 2017, 04:09:21 pm
Fitted it today on the drive bit of a ball ache but went ok,the front two forks don’t line up as there not long enough but seams solid,it came with new bolts but I don’t get were they went
Title: Re: Downpipe fitting
Post by: r5gtt on November 09, 2017, 05:49:45 pm
Quote from: Ant b on November 09, 2017, 04:09:21 pm
Fitted it today on the drive bit of a ball ache but went ok,the front two forks don’t line up as there not long enough but seams solid,it came with new bolts but I don’t get were they went
two bolts? 13mm heads? Would be the exhaust mount!.
Title: Re: Downpipe fitting
Post by: Ant b on November 09, 2017, 08:25:56 pm
Good shout