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Forums › The Car › Request a how-to › de-cat.


 
 

de-cat.
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spike_202
PostPosted: Sun Mar 20, 2011 7:31 pm Reply with quote Up
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Go for it mate they sound mint and you can feel the freeness/less restriction straight away. But it will make it v. Loud if you have a aftermarket back box. My de cat put around 10 bhp on my set up so can't see how they lower the power 2bf lol
 

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Last edited by spike_202 on Sun Mar 20, 2011 7:44 pm; edited 1 time in total
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nakednakeddave
PostPosted: Sun Mar 20, 2011 7:32 pm Reply with quote Up
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how do you know it added 10hp....? because they told you?
 

fat exhaust, dodgy rusty bonnet, stickers and steels....

KRU KREW
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Big_Rich180
PostPosted: Mon Mar 21, 2011 4:19 am Reply with quote Up
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Im with Lee on this one, I had a de-cat for my 180 and it sapped the torque from the engine....really not worth it save your money and buy a massive steak pie...in the long run you would be more happy with it.
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Kersh
PostPosted: Mon Mar 21, 2011 4:27 am Reply with quote Up
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nakednakeddave wrote:
how do you know it added 10hp....? because they told you?

read his project lol Smile

hes got a s**t load more air going in than anyone else so a decat is guaranteed to help flow in that situation.

cant see the benefit on a standard engine though without serious intake mods..

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Harry
PostPosted: Mon Mar 21, 2011 6:01 am Reply with quote Up
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bullous206 wrote:
Harry wrote:
ukskater01 wrote:
Cut cat out, weld pipe in. Well I think it something like that anyway! Smile

Exactly, pretty hard how to do a how as you have to know what you are doing. Or if you have a decat pipe ready to go on you could fit that. But it's a b*****d fitting into the centre pipe, as well as removing the old one + getting it to fit without gas leakage.

I have a de cat purely because my cat compltely broke and rattled with a fair while till the MOT and it was a lot cheaper / easier to fit and weld a pipe on and just fit a second hand cat for the MOT then change back again.

what did it sound like when you de-catted it?

It's deeper and a fair bit louder, I have a peco backbox and it was loud before, and now it's annoying loud. Also backfires quite a lot but it didn't with the standard backbox so it's probably a mix of the two.

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MrBSI
PostPosted: Mon Mar 21, 2011 2:01 pm Reply with quote Up
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Lee wrote:
Waste of time you'll lose power and you'll more than likely fail the mot

It WILL fail the mot next year Wink

Dont forget the famous

ANTIPOLLUTION FAULT Laughing

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Addaz
PostPosted: Mon Mar 21, 2011 3:31 pm Reply with quote Up
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Ive had mine on for around 5 years now, never failed the MOT Laughing

She is quiet and gains are good, compared to standard

But when you are concerned about back pressure, gimme a break its frigging 1.4 Laughing

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MrBSI
PostPosted: Mon Mar 21, 2011 3:33 pm Reply with quote Up
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Addaz wrote:
Ive had mine on for around 5 years now, never failed the MOT Laughing

Yet Wink

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Lewis1304
PostPosted: Mon Mar 21, 2011 3:50 pm Reply with quote Up
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Decat is the way forward, I love the noise of mine now with it, it back fires, flames and sounds awesome, gives it a rawr. Ive noticed an increase in power... however it could be down to the manifold also.

Slip the MOT guy a tenner and im sure he will wheel in a nice 1.0 corsa for your emmisions tests Smile

Lewis

206 1.6 16v, Nimrods, Full SP Kit, 3 Stage Valve Cut Head, 4-1 Manifold With Decat, Pug Sport Backbox, Vibe Speakers, HIDs In Projectors, DVD screens & Sub Smile
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Addaz
PostPosted: Mon Mar 21, 2011 3:57 pm Reply with quote Up
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MrBSI wrote:
Addaz wrote:
Ive had mine on for around 5 years now, never failed the MOT Laughing

Yet Wink

5 years, 3 different places

I have a standard system so im not worrying

Team Impossible Possible
The only way of finding the limits of the possible is by going beyond them into the impossible - Arthur C. Clarke

Forged 1.6 Turbo
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144Bhp @ 7PSi - 193.9Bhp @ 13psi

206 Gti Race Car
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For all Race/Track Preparation, Feel Free to PM Me!
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MrBSI
PostPosted: Mon Mar 21, 2011 3:59 pm Reply with quote Up
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Lewis1304 wrote:

Slip the MOT guy a tenner and im sure he will wheel in a nice 1.0 corsa for your emmisions tests Smile

Would have to be a total idiot to risk his mot license like that

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Harry
PostPosted: Mon Mar 21, 2011 4:02 pm Reply with quote Up
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MrBSI wrote:
Lewis1304 wrote:

Slip the MOT guy a tenner and im sure he will wheel in a nice 1.0 corsa for your emmisions tests Smile

Would have to be a total idiot to risk his mot license like that

People say it so casually, but I would feel like a knob trying that...

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Addaz
PostPosted: Mon Mar 21, 2011 4:04 pm Reply with quote Up
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Harry wrote:
MrBSI wrote:
Lewis1304 wrote:

Slip the MOT guy a tenner and im sure he will wheel in a nice 1.0 corsa for your emmisions tests Smile

Would have to be a total idiot to risk his mot license like that

People say it so casually, but I would feel like a knob trying that...

Because you are one.....

Love you lots Very Happy

Team Impossible Possible
The only way of finding the limits of the possible is by going beyond them into the impossible - Arthur C. Clarke

Forged 1.6 Turbo
Click to see more
144Bhp @ 7PSi - 193.9Bhp @ 13psi

206 Gti Race Car
Click to see more

For all Race/Track Preparation, Feel Free to PM Me!
Whether its for a custom ratio gearbox or track-day alignment, I can help!
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Harry
PostPosted: Mon Mar 21, 2011 4:06 pm Reply with quote Up
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Addaz wrote:
Harry wrote:
MrBSI wrote:
Lewis1304 wrote:

Slip the MOT guy a tenner and im sure he will wheel in a nice 1.0 corsa for your emmisions tests Smile

Would have to be a total idiot to risk his mot license like that

People say it so casually, but I would feel like a knob trying that...

Because you are one.....

Love you lots Very Happy

Oi you Laughing

ly2 <3

I don't know how I would go around finding a garage to 'pass' it for me.

Do I already have to have exsisting friends?

If so, I'm f****d..

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Lewis1304
PostPosted: Mon Mar 21, 2011 4:09 pm Reply with quote Up
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Smile Friends who work for garages yes or ask people who are in tuning car circles where to take it locally. I just take it same place my mates take their evo and ST's etc.

Lewis

206 1.6 16v, Nimrods, Full SP Kit, 3 Stage Valve Cut Head, 4-1 Manifold With Decat, Pug Sport Backbox, Vibe Speakers, HIDs In Projectors, DVD screens & Sub Smile
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