de-cat off ebay....any good?

[Davroos88]

Hi,

Iam after a de-cat for my golf ive seen some on ebay full stainless come in all sizes depending on the bore of your exhaust including gaskets, bolts etc only £89, has anybody bought one of these? are they worth investing in? Is there any pro`s or cons to a de-cat obviously removing it once a year for the m.o.t but how do you go about with the engine management light being on regarding the sensors? can this be turned off or reset?

Thanks Davros

[Wazzzer]

The gasket is crap so get a gen one. The 3" versions will need you to cut off the 2.25" end and use a 2.5" sleeve to extend it to fit an aftermarket stainless exhaust unless you are fitting it to a standard exhaust system. The 2.5" decat fits straight on to an aftermarket stainless.

[Davroos88]

Could i buy same gaskets as the standard ones which are on now, ive got a miltek cat back system on but not too sure what bore it is...think it will be 2.5" if this is right what size de-cat should i get? have you got one of these de-cats fitted to your car now? what does it sound like? in what way does it make a difference? whats you verdict on the de-cat personally?

Thanks for your reply!

[Wazzzer]

I like the decat, frees up the revs nicely. I would personally go for the 3" version if you already have the stainless. They make the note a little deeper but not too OTT

[Davroos88]

if i get a 3" downpipe what size does it need to be to connect to my exhaust if my exhaust is 2.5"? does the pipe need to be the same size as my exhaust or smaller than the bore of the exhaust? if that makes any sense

[dom]

if i get a 3" downpipe what size does it need to be to connect to my exhaust if my exhaust is 2.5"? does the pipe need to be the same size as my exhaust or smaller than the bore of the exhaust? if that makes any sense

Most eBay 3" downpipes reduce to 2.5" anyway, if the one you get doesn't then you'll need a 3" - 2.5" reducing sleeve. Any custom exhaust place will be able to knock one up in a few mins.

[Wazzzer]

The 3" will reduce to 2.25". You need to cut that off then get a piece made to bridge the gap

[Davroos88]

So will the decat will not fit straight on? i was thinking about getting the 3" downpipe with a 2.25" at the end of the decat which will fit to my miltek exhaust which is 2.5" will this be a straight on bolt on fit or is it a ballache of a job?

[dom]

So will the decat will not fit straight on? i was thinking about getting the 3" downpipe with a 2.25" at the end of the decat which will fit to my miltek exhaust which is 2.5" will this be a straight on bolt on fit or is it a ballache of a job?

The milltek is 2.5" but has a reducing sleeve at the end to reduce it to 2.25" so it will join the factory cat. If the decat reduces to 2.5" then it will fit straight on.