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Chris_corsab

Member

Registered: 28th Feb 10
User status: Offline

16th Jul 11 at 18:11

My cat is braking up now so i think its on its last legs...

What are the pros and cons? (dont worry about mot got it coverd

)

Or should i have normal or sports cat?

How much fuel would i loose about? (mpg)?

Also how loud would it make the car? (p.s i have cat back power flow and it sounds nice not to loud tho..)

Any help in what to do would be good

Eddx14xe

Member

Registered: 12th Jan 10
Location: Hertfordshire
User status: Offline

16th Jul 11 at 18:18

Insurance is void if you do it.

JaffaTB

Member

Registered: 7th Oct 09
Location: Sheffield, South Yorkshire
User status: Offline

16th Jul 11 at 18:37

mine has better mpg without a cat, smells nicer too

Jed D

Member

Registered: 15th Mar 11
Location: Durham
User status: Offline

16th Jul 11 at 18:45

quote:
Originally posted by JaffaTB
mine has better mpg without a cat, smells nicer too

^^this^^

much better without imo
sounds bit nicer too

Chris_corsab

Member

Registered: 28th Feb 10
User status: Offline

16th Jul 11 at 19:00

How the hell can i gain more mpg? Hows that work? Or is it a joke?

Toby

Premium Member

Registered: 29th Nov 05
User status: Offline

16th Jul 11 at 23:56

quote:
Originally posted by Chris_corsab
How the hell can i gain more mpg? Hows that work? Or is it a joke?

Well my Mpg increased on a whole when I fitted my milltek manifold and decat. Not sure why as it overfuels like fuck. can on guess 2nd lambda sensor reads it as rich and weens out the fueling.

antnee

Member

Registered: 30th Dec 07
Location: Cov Drives: Clio 197
User status: Offline

17th Jul 11 at 00:51

More MPG will be cos its still requesting the same amount of fuel (as map wont change) but there is less restriction so therefore more power for same amount of fuel.

Chris_corsab

Member

Registered: 28th Feb 10
User status: Offline

17th Jul 11 at 09:30

Ohh sounds good to me lol

Do you think wud be beat to decat then or just decat it

SeanXE

Member

Registered: 17th Jan 09
Location: Luton
User status: Offline

17th Jul 11 at 09:43

quote:
Originally posted by Eddx14xe
Insurance is void if you do it.

Lol?

Kieran

Premium Member

Registered: 12th Sep 08
Location: Kent
User status: Offline

17th Jul 11 at 09:48

Is it not illegal if the car/engine was not made before 1992? because of emissions and that?

I'm not against it just thought Sean would like to know lol

Kieran

Premium Member

Registered: 12th Sep 08
Location: Kent
User status: Offline

17th Jul 11 at 09:50

For example

20xe early redtop no cat needed
C20xe still early or late but needs a cat

[Edited on 17-07-2011 by kizzacorsab]

shaunmods

Premium Member

Registered: 12th Mar 07
Location: Glascote, Staffordshire
User status: Offline

17th Jul 11 at 09:52

If you've covered on the MOT front then go for it

Mines decatted and its sounds much nicer without it. More ground clearance too which is always handy lol

SeanXE

Member

Registered: 17th Jan 09
Location: Luton
User status: Offline

17th Jul 11 at 09:54

quote:
Originally posted by kizzacorsab
Is it not illegal if the car/engine was not made before 1992? because of emissions and that?

I'm not against it just thought Sean would like to know lol

Chris_corsab

Member

Registered: 28th Feb 10
User status: Offline

17th Jul 11 at 09:58

hmm might go for it then

costing me £50 from powerflow

Bonney

Member

Registered: 14th Nov 04
Location: St Helens
User status: Offline

17th Jul 11 at 10:05

Better off doing it as car tax keeps going up so you can get your money's worth!

Eddx14xe

Member

Registered: 12th Jan 10
Location: Hertfordshire
User status: Offline

17th Jul 11 at 11:22

quote:
Originally posted by kizzacorsab
Is it not illegal if the car/engine was not made before 1992? because of emissions and that?

I'm not against it just thought Sean would like to know lol

Its because its classed as a mod. If you car needs a cat then obv you wont be able to insure without one because it illegal to do and as its not on your insurance, they dont have to pay out. Just like having alloys etc on but there not on your insurance.

Before people go on, im not on my high horse telling you not to do it etc etc. I know alot of people do it but its probably best you know then find out when your insurance wont pay out.

Eddx14xe

Member

Registered: 12th Jan 10
Location: Hertfordshire
User status: Offline

17th Jul 11 at 11:24

quote:
Originally posted by SeanXE

quote:
Originally posted by Eddx14xe
Insurance is void if you do it.

Lol?

Ment to quote this one

gez bay

Member

Registered: 14th Feb 08
Location: South Wales drives: Vxr
User status: Offline

17th Jul 11 at 11:24

9/10 people with a corsa B will only be 3rd party anyway. Decat it

R Lee

Member

Registered: 15th Aug 03
User status: Offline

17th Jul 11 at 11:33

Correct me if I'm wrong...
I thought its not legal requirement if your car can pass emissions without the Cat? Regardless of whether it was pre 91 or not.

Kris1990

Member

Registered: 10th Dec 10
Location: Shotton (near Chester)
User status: Offline

17th Jul 11 at 14:05

does it not lose torque a make it a bit flat at lower revs though ? thought it was best to at least have some back pressure ? not sure really just what i've been told

Chris_corsab

Member

Registered: 28th Feb 10
User status: Offline

17th Jul 11 at 14:08

Il prob do it if i dont use any less fuel tbh... Will it pop and bang on down shifting ?

Jed D

Member

Registered: 15th Mar 11
Location: Durham
User status: Offline

17th Jul 11 at 15:36

quote:
Originally posted by Chris_corsab
Il prob do it if i dont use any less fuel tbh... Will it pop and bang on down shifting ?

mines has the odd pop, 4.1, small silencer centre

Ash_EP3

Member

Registered: 15th May 07
Location: Melksham, Wiltshire
User status: Offline

17th Jul 11 at 15:38

If you have a full exhaust system yes.... if not no...

shaunmods

Premium Member

Registered: 12th Mar 07
Location: Glascote, Staffordshire
User status: Offline

17th Jul 11 at 15:40

quote:
Originally posted by Chris_corsab
Il prob do it if i dont use any less fuel tbh... Will it pop and bang on down shifting ?

Depends on the rest of the exhaust really chris. I've got a massive middle box on mine so no pops or bangs from mine

Chris_corsab

Member

Registered: 28th Feb 10
User status: Offline

17th Jul 11 at 15:49

quote:
Originally posted by shaunmods

quote:
Originally posted by Chris_corsab
Il prob do it if i dont use any less fuel tbh... Will it pop and bang on down shifting ?

Depends on the rest of the exhaust really chris. I've got a massive middle box on mine so no pops or bangs from mine

my middle is small ish i guess... and its a powerflow cat back system ?

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