2.0 tsi vrs issue

[Bigjonesy51]

Wonder if anyone can help me out, ive got a 2011 2.0 tsi vrs and already fitted milltek catback, and revo stage 1 map, now I changed the air intake to a revo CAI and have since developed a screech from the engine when running full boost, this happens with or without the revo software. Anyone ever had this? All hoses are right, no boost leaks hat I can see, the vacuum hose of the underside of the hard pipe for the CAI is very awkward to get on and the rubber o-ring split but is still clipped in place.

2nd if this isn't anything to worry about or is a relatively easy fix, I'm looking to replace my downpipe with a 3" but unsure as to whether to go de-car or sports cat. MOT isn't an issue with regards to decat as I can get it swapped back for that purpose, I just don't want the exhaust to be mega droney on the motorway. Anyone fitted either or and have any feedback with it fitted to a milltek non-resonated catback?

Cheers in advance

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[terryrebel]

does it only do it then ya on full boost 

[Bigjonesy51]

It does it between 3000&4300 rpm roughly mate, so yeah when full power

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[terryrebel]

hmmm stumbled

[Bigjonesy51]

Very strange indeed mate, I'm looking to go stage 2 but want this annoying noise rectified first :( feel like I'm chasing my tail, and finding nothing :(

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[banzaiman]

It doesn't sound like this does it

 

https://www.youtube.com/watch?v=EX3QTqBRriE

 

I have exactly the same issue. its to do with the diverter valve and the intake. only cure is to go back to stock or move the diverter using a relocation kit to the front of the engine. I've just put up with it for now but its soooo annoying. its like an accordion

 

also more info here

 

http://www.golfmk6.com/forums/showthread.php?t=47372

Edited 8 April, 2015 by banzaiman

[Bigjonesy51]

It sounds almost identical to that! I wonder if there is a relocation kit available for the tsi octy...

Your an absolute legend! Been searching for weeks for a resolution to this noise lol. Pulling my hair out incase there's an issue with the turbo...

Thanks agin matey!

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[terryrebel]

hope its that mate 

[Bigjonesy51]

Thanks mate, got a rev g diverter valve going on this weekend so fingers crossed I notice a slight difference after fitting that.

Any ideas on a sports cat? Or would custom be the best bet?

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[OctyCal]

Any ideas on a sports cat? Or would custom be the best bet?

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If you want a good but cheaper option, take a look at these:

http://www.ebay.co.uk/itm/VOLKSWAGEN-GOLF-MK5-GTI-2-0-FSI-TURBO-200CPI-3-SPORTS-CAT-EXHAUST-PIPE-/230865921656?pt=LH_DefaultDomain_3&hash=item35c0ae6678

I took a punt on one that went for £200 on auction and made it fit. I have a 2010 tsi vrs and the sport cat fits the flange with no messing around. Oddly I was expecting to need to drill the flange holes out as the pre fl and fl have a similar flange but fortunately this sport cat fits straight on. Miltek use a flange that accommodates both bolt holes, as does the new OE gasket I purchased to fit it.

The only problem faced on my car was adapting it to fit the OE mid section/back box as the cat section travels more than half the length of the car in a 3" section then steps down to the OE size, we just had to cut the OE mid section down part way up to marry it up, used a new OE clamp sleeve, bobs your uncle, fannies your aunt, instantly pulls much better. I do have pics, I will update with them for you.

Hope this helps,

Cal

[Bigjonesy51]

If you want a good but cheaper option, take a look at these:

http://www.ebay.co.uk/itm/VOLKSWAGEN-GOLF-MK5-GTI-2-0-FSI-TURBO-200CPI-3-SPORTS-CAT-EXHAUST-PIPE-/230865921656?pt=LH_DefaultDomain_3&hash=item35c0ae6678

I took a punt on one that went for £200 on auction and made it fit. I have a 2010 tsi vrs and the sport cat fits the flange with no messing around. Oddly I was expecting to need to drill the flange holes out as the pre fl and fl have a similar flange but fortunately this sport cat fits straight on. Miltek use a flange that accommodates both bolt holes, as does the new OE gasket I purchased to fit it.

The only problem faced on my car was adapting it to fit the OE mid section/back box as the cat section travels more than half the length of the car in a 3" section then steps down to the OE size, we just had to cut the OE mid section down part way up to marry it up, used a new OE clamp sleeve, bobs your uncle, fannies your aunt, instantly pulls much better. I do have pics, I will update with them for you.

Hope this helps,

Cal

I currently have a milltek catback fitted but if all that is needed is a slight cut and a sleeve fitted then I'm game for that!

Pictures would be spot on matey if you have some!

Cheers

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[OctyCal]

Ps, this eBay company do the mk1 vrs sport cat that I used on my mk1 with great results, proven by the top tuning companies to aid push huge power too.

[OctyCal]

Cat lined up to my spare turbo:

Where it flares down to OE clamp:

3" at the flange:

3" after sport cat:

3" into second section:

OE size outlet:

On the car, note the lambda is on opposite side but the wire has enough in it to locate there:

As I said, you can fit it to the OE system, the miltek may need a reducer cutting in on the 3" section to step down to the 2.75" that your cat back prob is but I'm only guessing at that.

Hope this helps,

Cal

[Bigjonesy51]

Cat lined up to my spare turbo:

Where it flares down to OE clamp:

3" at the flange:

3" after sport cat:

3" into second section:

OE size outlet:

On the car, note the lambda is on opposite side but the wire has enough in it to locate there:

As I said, you can fit it to the OE system, the miltek may need a reducer cutting in on the 3" section to step down to the 2.75" that your cat back prob is but I'm only guessing at that.

Hope this helps,

Cal

That looks decent mate! I was looking at this item on eBay : http://pages.ebay.com/link/?nav=item.view&alt=web&id=201257605041

I know it's for tfsi but should be fine, just not sure on build quality... Will go and get a custom prices up aswell and compare

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