MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: vRS_Pagey on October 04, 2011, 08:43:12 am

Title: Downpipe fitting
Post by: vRS_Pagey on October 04, 2011, 08:43:12 am
Can anyone confirm that if I fit a milltek downpipe with sport cat while running stage 1 software, could it potentially damage the engine if I run it for a few months before having the software tweaked?
Title: Re: Downpipe fitting
Post by: PDT on October 04, 2011, 09:26:59 am
As per my PM, you will be fine  :happy2:
Title: Re: Downpipe fitting
Post by: daboy3000 on October 04, 2011, 09:36:26 am
Could you explain more about this as I wasn't thinking I would need to spend another £300 on a remap
Title: Re: Downpipe fitting
Post by: bacillus on October 04, 2011, 11:44:33 am
iirc RedRobin had the milltek TBE fitted on his car whilst still stock i.e. no remap and ran it like that for many months without any problems.
Title: Re: Downpipe fitting
Post by: gazon69 on October 04, 2011, 06:16:32 pm
I had evoms intake milltek tbe and a few other bits on mine before going straight to stage 2+ and had no problems whatsover.
Title: Re: Downpipe fitting
Post by: vRS_Pagey on October 04, 2011, 06:58:53 pm
Could you explain more about this as I wasn't thinking I would need to spend another £300 on a remap

If you already have stage 1 your tuner will normally charge upto £100 to upgrade your software to stage 2.  I am having issues as my tuner doesn't do staged tuning.  They can tweak the map to allow for the added flow from the sport cat etc, but I will need to complete a 450 mile round trip for the privilege. 

Title: Re: Downpipe fitting
Post by: gazon69 on October 05, 2011, 11:41:46 am
I didn't have stage 1 pal. I fitted a few of the bits myself than ran it like that for a couple of months until i got a bit more money saved for other bits, then straight to a stage 2+ map
Title: Re: Downpipe fitting
Post by: vRS_Pagey on October 07, 2011, 09:38:37 am
Next question on the fitting, the Milltek is 70mm diameter compared to 60mm OE pipe (on the vRS), whats the best way to fit the reducer?  I was thinking about having it welded to the downpipe but clamped to the OE cat back, that way it will be easier to return to standard.  Any thoughts or examples would be good?
Title: Re: Downpipe fitting
Post by: E30Dom on October 07, 2011, 10:56:18 am
My Pipewerx has a special reducer pipe from the 3" down to the standard at the cat back...
Title: Re: Downpipe fitting
Post by: vRS_Pagey on October 07, 2011, 02:30:24 pm
My Pipewerx has a special reducer pipe from the 3" down to the standard at the cat back...

That doesn't help...... :P
Title: Re: Downpipe fitting
Post by: E30Dom on October 07, 2011, 02:51:51 pm
My Pipewerx has a special reducer pipe from the 3" down to the standard at the cat back...

That doesn't help...... :P

Would a pic? ;-)
Title: Re: Downpipe fitting
Post by: muckipup on October 07, 2011, 03:31:10 pm
Next question on the fitting, the Milltek is 70mm diameter compared to 60mm OE pipe (on the vRS), whats the best way to fit the reducer?  I was thinking about having it welded to the downpipe but clamped to the OE cat back, that way it will be easier to return to standard.  Any thoughts or examples would be good?

Hey Lee, I have the Pipewerx as well so didn't need a reducer either but the reducers can be got of the internet. Welding seems like a bit of unnecessary work when the reducer with a couple of good clamps and some Hylomar to keep the jointing gas tight would do.
Title: Re: Downpipe fitting
Post by: vRS_Pagey on October 07, 2011, 03:55:30 pm
Next question on the fitting, the Milltek is 70mm diameter compared to 60mm OE pipe (on the vRS), whats the best way to fit the reducer?  I was thinking about having it welded to the downpipe but clamped to the OE cat back, that way it will be easier to return to standard.  Any thoughts or examples would be good?

Hey Lee, I have the Pipewerx as well so didn't need a reducer either but the reducers can be got of the internet. Welding seems like a bit of unnecessary work when the reducer with a couple of good clamps and some Hylomar to keep the jointing gas tight would do.

Sounds like a plan!  I just don't want an permanent items attached to the OE cat back.  :happy2:
Title: Re: Downpipe fitting
Post by: martziniuk on October 07, 2011, 09:38:17 pm
I had a cone reducer welded onto the DP and a length of 2 1/4" pipe welded onto that. I think the gradual reduction via the cone is a good way to do it.
Title: Re: Downpipe fitting
Post by: vRS_Pagey on October 07, 2011, 10:53:06 pm
When I fitted the GTi back box on swmbo's Golf I used a step down reducer and clamps, I didn't use sealant either and it seems fine.  I just wanted something a bit more professional this time.
Title: Re: Downpipe fitting
Post by: E30Dom on October 08, 2011, 07:47:03 pm
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fv108%2Fax_vts_dom%2Fbb59921b.jpg&hash=92f90a3662e47061e0e445114738204ee75d7fbb)