MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Performance Modifications => Topic started by: jeynesey on February 22, 2011, 05:29:29 pm

Title: Help?! De-cat
Post by: jeynesey on February 22, 2011, 05:29:29 pm

Ok, so can someone explain to me please? :signLOL:


If you buy an exhaust (full system/TB) with a de-cat, is this not an MOT failure?

Title: Re: Help?! De-cat
Post by: Aaron_RJ on February 22, 2011, 09:07:24 pm

yes as the emissions will be out as there is no catalytic convertor to reduce emissions at output ,you will also need a remap to code out the lamdas otherwise your EML will be on and your car may possibly go into limp home mode  :drinking:

Title: Re: Help?! De-cat
Post by: keano on February 22, 2011, 10:31:39 pm

Not saying that I have a decat. But if i did, it doesn't wouldn't show any eml lights or fault codes.

 :evilgrin:

Title: Re: Help?! De-cat
Post by: PDT on February 23, 2011, 06:13:28 pm

Most tuners can alter your diagnostics to eliminate any dash lights when you fit a decat.

As for MOT time, it will fail (unless the probe is accidentally put up another cars exhaust)

Title: Re: Help?! De-cat
Post by: martziniuk on February 24, 2011, 09:28:55 pm

I got the EML on my decat but got my tuner to map it out.

Title: Re: Help?! De-cat
Post by: vRS_Pagey on February 27, 2011, 04:50:42 pm

Quote from: PDT on February 23, 2011, 06:13:28 pm

Most tuners can alter your diagnostics to eliminate any dash lights when you fit a decat.

As for MOT time, it will fail (unless the probe is accidentally put up another cars exhaust)

 :surprised:  :wink: