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Model specific boards => Golf mk2 => Topic started by: rik1985austin on 07 December 2007, 10:56

Title: De-Cat
Post by: rik1985austin on 07 December 2007, 10:56: Where Can I Get A De-Cat For My MK2? The Cat That is On my Car Is Rattling And I Need To Sort it Out.
But thought that i could De-Cat it And Gain A Few More Horses Aswell.
Many Thanks,
Rik
Title: Re: De-Cat
Post by: russ-vdub on 07 December 2007, 10:59: what year is your car?
Title: Re: De-Cat
Post by: rik1985austin on 07 December 2007, 11:07: My Car Is A H Reg 1990 Jetta, With PF Engine.
Title: Re: De-Cat
Post by: russ-vdub on 07 December 2007, 12:30: it probably aint a cat then, all cars pre 1991 werent required to have one..i just get a straight replacement for exhaust can thats pooped. kwit fit will sort it for cheap, or go gsf and fit it yourself.
Title: Re: De-Cat
Post by: nealey on 07 December 2007, 16:40: Quote from: russ-vdub on 07 December 2007, 12:30
it probably aint a cat then, all cars pre 1991 werent required to have one..i just get a straight replacement for exhaust can thats pooped. kwit fit will sort it for cheap, or go gsf and fit it yourself.

Looking on etka a PF engined car is actually fitted with a cat by the looks of it, a pretty rare option!!

As for decat pipe i cant say ive ever seen one for a mk2 although i would be tempted to try one from a mk3 to see if that fits, if not then get yourself a 4 branch manifold for a mk3 and it will fit then
Title: Re: De-Cat
Post by: Mew on 07 December 2007, 16:58: PF, is that the 16v engine?

If so, a 16v Corrado de-cat would probably do the job :smiley:
Title: Re: De-Cat
Post by: nealey on 07 December 2007, 17:38: Quote from: Mew on 07 December 2007, 16:58
PF, is that the 16v engine?

If so, a 16v Corrado de-cat would probably do the job :smiley:

8v by the looks of it, uses same block as pb and is ran on digi but makes less power!
Title: Re: De-Cat
Post by: rik1985austin on 08 December 2007, 10:07: Yeah that another reason why i want to replace it. Ive just recieved a de-cat from e-bay, and the flange at the front will meet, but the back of the pipe is too long, and too big for the rest of the system, im thinking of going to an exhaust fitter, and asking if they can make me a reducer pipe to fit.
Thanks Again,
Rik
Title: Re: De-Cat
Post by: rubjonny on 10 December 2007, 16:44: yup cats were a rare factory fit option, and as said the PF code is the MK2 digi with a cat. The 16v cat engine code was PL just fyi!

Once you've done that, unplug the lambda probe and get an ECU from a std non-cat MK2 GTI, should see you a few more horses!
Title: Re: De-Cat
Post by: rik1985austin on 13 December 2007, 09:50: Quote from: rubjonny on 10 December 2007, 16:44
yup cats were a rare factory fit option, and as said the PF code is the MK2 digi with a cat. The 16v cat engine code was PL just fyi!

Once you've done that, unplug the lambda probe and get an ECU from a std non-cat MK2 GTI, should see you a few more horses!
Could I Leave the standard ECU On As it is Chipped Already? Just Reset It So The New Settings Will Take Effect?
Thanks Again,
Rik
Title: Re: De-Cat
Post by: mk2mark on 13 December 2007, 18:16: Yep, pretty sure it wont make any difference to the ecu.
Title: Re: De-Cat
Post by: kittie on 14 December 2007, 09:47: Quote from: russ-vdub on 07 December 2007, 12:30
it probably aint a cat then, all cars pre 1991 werent required to have one..i just get a straight replacement for exhaust can thats pooped. kwit fit will sort it for cheap, or go gsf and fit it yourself.

It was some time in 1992 wasn't it? Mines a 1992 and doesn't have one.

Didn't know that any mk2s had Cats actually, very surprised!
Title: Re: De-Cat
Post by: mk2mark on 14 December 2007, 22:20: Don't be, they were super rare!
Title: Re: De-Cat
Post by: hexomire on 15 December 2007, 19:37: you can use the exhaust hose from a PB for de-cat but drill a hole in the front and weld on a nut for the lambda probe. leave the lambda on!