#31: Re: How to de-cat a 1.1 Author: Rob2859, Location: HalifaxPosted: Sun Apr 15, 2012 5:11 pm ---- The pikey way is to take the CAT off and bash the insides out. Was thinking about doing it to mine as it will fail on emissions MOT time anyway so I might just got for a cheeky "special"
Regarding performance; It is actually more likely to noticeably improve performance over something with a bigger engine. The reason being there is less power to start with. For example; you are less likely to notice an extra 4 bhp on a 100 bhp car than you would bhp on a 60bhp car.
#32: Re: How to de-cat a 1.1 Author: stg-joker, Location: buxton, norwichPosted: Mon Apr 16, 2012 7:47 am ---- Thanks for all your help and for backing me up, its just something I wanna try for the fun of it, plus you learn from it don't you. I'm aware the performance won't increase but there's always that popping sound isn't there ;)!
I reckon i'll play it the pikey way and head down to the breakers yard and get one from a same car and gut it, then i can always keep mine for replacement when my MOT comes right?
Just to clarify my CAT is from the Manifold right? so when I goto the breakers yard what do i need to get?
many thanks.
#33: Re: How to de-cat a 1.1 Author: Big_Rich180, Posted: Mon Apr 16, 2012 7:53 am ----
Lee wrote:
Don't decat the 180, slows it down and causes it to go into limp mode a lot
It doesnt
It may lose a bit of torque but it doesnt go into limp mode.
#34: Re: How to de-cat a 1.1 Author: jimjam19927, Location: PortsmouthPosted: Mon Apr 16, 2012 7:54 am ----
Andrewxps wrote:
tomd0801754 wrote:
jimjam19927 wrote:
Jay794 wrote:
Not trying to troll, but seriously, it's really not worth doing, plus it's illegal, you want noise? Drill a few holes in your airbox
You have de-cat in your signature?! LOL
It's legal on a diesel. LOL.
Not any more, new rules say all cars that left the factory with a cat have to have one at MOT
LOL shhhhh
#35: Re: How to de-cat a 1.1 Author: Harry, Location: StaffordPosted: Mon Apr 16, 2012 8:19 am ----
stg-joker wrote:
Thanks for all your help and for backing me up, its just something I wanna try for the fun of it, plus you learn from it don't you. I'm aware the performance won't increase but there's always that popping sound isn't there ;)!
I reckon i'll play it the pikey way and head down to the breakers yard and get one from a same car and gut it, then i can always keep mine for replacement when my MOT comes right?
Just to clarify my CAT is from the Manifold right? so when I goto the breakers yard what do i need to get?
many thanks.
You need to check as it CAN be in the manifold or it CAN be under the car in the centre pipe it takes 30 seconds maximum to look.
If it's in the cat you need to get an aftermarket manifold, as addaz has said the oil filter housing is in the way so you can't just go and get a manifold from one that had the cat under the car.
If it's under the car, just get a centre pipe from a car that has it in the manifold and it will automatically de cat it.
#36: Re: How to de-cat a 1.1 Author: Jay794, Location: Sheffield/Chesterfield/DronfieldPosted: Mon Apr 16, 2012 12:28 pm ----
Andrewxps wrote:
tomd0801754 wrote:
jimjam19927 wrote:
Jay794 wrote:
Not trying to troll, but seriously, it's really not worth doing, plus it's illegal, you want noise? Drill a few holes in your airbox
You have de-cat in your signature?! LOL
It's legal on a diesel. LOL.
Not any more, new rules say all cars that left the factory with a cat have to have one at MOT
Really? Well mine been got through the MOT ok, when do/did these rules come in.
And yeah I have decat'd my car, as stated its a diesel, and it actually has some power under the bonnet
#37: Re: How to de-cat a 1.1 Author: Lecktorious, Location: ScotlandPosted: Mon Apr 16, 2012 12:48 pm ----
Jay794 wrote:
And yeah I have decat'd my car, as stated its a diesel, and it actually has some power under the bonnet
LOL.
#38: Re: How to de-cat a 1.1 Author: Mikey2uk, Location: StevenagePosted: Mon Apr 16, 2012 12:57 pm ----
Andrewxps wrote:
tomd0801754 wrote:
jimjam19927 wrote:
Jay794 wrote:
Not trying to troll, but seriously, it's really not worth doing, plus it's illegal, you want noise? Drill a few holes in your airbox
You have de-cat in your signature?! LOL
It's legal on a diesel. LOL.
Not any more, new rules say all cars that left the factory with a cat have to have one at MOT
Wrong that is only on Petrols, Diesels are fine.
#39: Re: How to de-cat a 1.1 Author: Addaz, Location: SuffolkPosted: Mon Apr 16, 2012 1:00 pm ----
Mikey2uk wrote:
Andrewxps wrote:
tomd0801754 wrote:
jimjam19927 wrote:
Jay794 wrote:
Not trying to troll, but seriously, it's really not worth doing, plus it's illegal, you want noise? Drill a few holes in your airbox
You have de-cat in your signature?! LOL
It's legal on a diesel. LOL.
Not any more, new rules say all cars that left the factory with a cat have to have one at MOT
Wrong that is only on Petrols, Diesels are fine.
AFAIK the MOT tester has to physically see a cat for an MOT for it to pass
Being a 2001 it will have a front manifold mounted cat
#40: Re: How to de-cat a 1.1 Author: Mikey2uk, Location: StevenagePosted: Mon Apr 16, 2012 1:01 pm ---- But diesel do not need one even under the new rules, it is only petrols
#41: Re: How to de-cat a 1.1 Author: Addaz, Location: SuffolkPosted: Mon Apr 16, 2012 1:02 pm ----
Mikey2uk wrote:
But diesel do not need one even under the new rules, it is only petrols
I will have to double check that as im not 100 percent
#42: Re: How to de-cat a 1.1 Author: Mikey2uk, Location: StevenagePosted: Mon Apr 16, 2012 1:04 pm ---- Seabrook posted it up a little while ago
#43: Re: How to de-cat a 1.1 Author: Andrew, Location: Black Country Ay IPosted: Mon Apr 16, 2012 1:27 pm ---- Maybe diesels might be fine, but the case about him decatting his 1.1 not being worth it has been stood up for and thats all I was concerned about
Could you imagine if every gti owner on here went about on every thread and said 'dont do it its not worth it because you have an inferior engine to me'? No, because this site would soon have no returning members
#44: Re: How to de-cat a 1.1 Author: Jay794, Location: Sheffield/Chesterfield/DronfieldPosted: Mon Apr 16, 2012 1:45 pm ----
Lecktorious wrote:
Jay794 wrote:
And yeah I have decat'd my car, as stated its a diesel, and it actually has some power under the bonnet
LOL.
I said "some" power, It's not exactly a lambo but it's fast enough....at least until I can afford a remap lol
#45: Re: How to de-cat a 1.1 Author: Mikey2uk, Location: StevenagePosted: Mon Apr 16, 2012 2:14 pm ----
Andrewxps wrote:
Maybe diesels might be fine, but the case about him decatting his 1.1 not being worth it has been stood up for and thats all I was concerned about
Could you imagine if every gti owner on here went about on every thread and said 'dont do it its not worth it because you have an inferior engine to me'? No, because this site would soon have no returning members
True it was uncalled for as its down to the OP with what he does to his car.
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LOL shhhhh 
