GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Topic started by: Gandy on 10 January 2014, 10:44

Title: Decat.........
Post by: Gandy on 10 January 2014, 10:44
Hi Guys.....
Has anyone had any problems with fitting De-cats on the (ARZ Engine code) 2002 1.8 Turbo Golfs in regards to MOTs or little flashing lights on dashboards...Or is it safer with the Sports cat and if so what Cell is the best as im a thicko when it comes to this sort of thing  :tongue:
Also.........
If anyone lives in Wales....Best place to go
Cheers
Title: Re: Decat.........
Post by: mcgee9t2 on 10 January 2014, 12:41
unless your friendly with your MOT Tester you will have problems at MOT time. i.e you have to have a cat fitted to pass your mot.


i think the higher the cell the better the sports cat is, but i cant remember off the top of my head. if it was me and i could afford it id always go sports cat.
Title: Re: Decat.........
Post by: Gandy on 10 January 2014, 16:55
Cheers for the info.....Does the decat throw any lights on ?
Title: Re: Decat.........
Post by: joshstanvw on 10 January 2014, 17:00
Not sure but I thought a std cat was 400 cell and sports are 200 or even 100 cells are restrictive (I may have the wrong end of the stick)
Title: Re: Decat.........
Post by: dom on 10 January 2014, 17:04
Cheers for the info.....Does the decat throw any lights on ?

It can do.
Title: Re: Decat.........
Post by: brewey on 10 January 2014, 17:43
The numbers are all to do with how restrictive the cat is. The lower the number of cells the higher the emissions. A 100 cell probably would not pass an mot as it's not restrictive enough for the emissions side of things but obviously will give more flow to the exhaust system. To save hassles you're best off with a 200 cell. That's what's in milltek downpipe/ sports cats.
Title: Re: Decat.........
Post by: jake-w07 on 11 January 2014, 10:48
i had an ebay 3" down pipe n decat fitted to my auq this week eml light came on yday, i just cleared fault will come back on but its worth it
Title: Re: Decat.........
Post by: Wazzzer on 11 January 2014, 10:50
only way round that is raising the threshold for the EML light during mapping
Title: Re: Decat.........
Post by: Gandy on 11 January 2014, 11:08
Cheers Guys for the info.............
Title: Re: Decat.........
Post by: jake-w07 on 11 January 2014, 11:25
only way round that is raising the threshold for the EML light during mapping

yeh gonna speak to where i had it remapped see what he suggests

may look into going stage 2 if i can afford the other supporting mods
Title: Re: Decat.........
Post by: mar_k on 11 January 2014, 19:06
Can also space the rear Lambda, Solved the issue on my mates mk4 golf with ebay 3" system.