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Andy GSi

Member

Registered: 24th Mar 02
Location: Shropshire, Drives 2.0l 16v Corsa
User status: Offline

7th Feb 05 at 15:50

raspy

it sounds sweet ideling, and low/high revs, but around 3-4 revs it rasps! no holes or anything! before it was decat it sounded good. its a full powerflow system, i had made up 2 years back.

what can be done to solve this

[Edited on 07-02-2005 by andysri]

broster

Premium Member

Registered: 6th Dec 02
Location: Drives: E39
User status: Offline

7th Feb 05 at 15:52

put a silencer in it!

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

7th Feb 05 at 15:53

silenced decat?

took my decat off as it was too loud

Andy GSi

Member

Registered: 24th Mar 02
Location: Shropshire, Drives 2.0l 16v Corsa
User status: Offline

7th Feb 05 at 15:54

where do u put the silencer where the de-cat pipe is?

[Edited on 07-02-2005 by andysri]

Claire

Member

Registered: 19th Jan 03
Location: The Sarrrf
User status: Offline

7th Feb 05 at 15:58

If you're going to put a silencer in you may aswell just put the cat back in.

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

7th Feb 05 at 16:06

can get decats with a small silencer in them

Andy GSi

Member

Registered: 24th Mar 02
Location: Shropshire, Drives 2.0l 16v Corsa
User status: Offline

7th Feb 05 at 16:07

i just got a straight threw pipe from scrappy off a cav GSi.

Joff

Member

Registered: 17th Oct 00
Location: Cambridgeshire
User status: Offline

7th Feb 05 at 16:27

quote:
Originally posted by Claire G
If you're going to put a silencer in you may aswell just put the cat back in.

The idea of removing the cat is that it's an expensive part to replace and when they go, they smell eggy.
A cat section will normally be a lot more restrictive than a silencer.

Andy GSi

Member

Registered: 24th Mar 02
Location: Shropshire, Drives 2.0l 16v Corsa
User status: Offline

7th Feb 05 at 16:35

so the silencer will stop the raspy sound? and keep the performance?

vibrio

Banned

Registered: 28th Feb 01
Location: POAH
User status: Offline

7th Feb 05 at 16:36

quote:
Originally posted by andysri
raspy it sounds sweet ideling, and low/high revs, but around 3-4 revs it rasps! no holes or anything! before it was decat it sounded good. its a full powerflow system, i had made up 2 years back.

what can be done to solve this

[Edited on 07-02-2005 by andysri]

put cat back on

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

7th Feb 05 at 16:38

did you fit the decat with exhaust paste? when i first put mine on it had a tinny rattle, refitted it and it sounded like a banger racer , so took it off

Andy GSi

Member

Registered: 24th Mar 02
Location: Shropshire, Drives 2.0l 16v Corsa
User status: Offline

7th Feb 05 at 16:38

quote:
Originally posted by vibrio

quote:
Originally posted by andysri
raspy it sounds sweet ideling, and low/high revs, but around 3-4 revs it rasps! no holes or anything! before it was decat it sounded good. its a full powerflow system, i had made up 2 years back.

what can be done to solve this

[Edited on 07-02-2005 by andysri]

put cat back on

why didnt i think of that

i might do that, but my mot is in june, so put it back on for then, then leave it!

Andy GSi

Member

Registered: 24th Mar 02
Location: Shropshire, Drives 2.0l 16v Corsa
User status: Offline

7th Feb 05 at 16:39

quote:
Originally posted by 3CorsaMeal
did you fit the decat with exhaust paste? when i first put mine on it had a tinny rattle, refitted it and it sounded like a banger racer , so took it off

yeah put the paste on. so have u put cat back on urs then?

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

7th Feb 05 at 16:40

yeah, keep debating whether to swap back to the decat but it was horrible sounding

stuartmitchell

Member

Registered: 24th Apr 04
Location: Kirkliston, Edinburgh
User status: Offline

7th Feb 05 at 17:25

Miltek do performance CATs, maybe give that a go, very expensive though

Corsa_Carl

Member

Registered: 8th Oct 04
Location: Darlington
User status: Offline

7th Feb 05 at 17:52

god ! my mates micra does that, its proper bad !

broster

Premium Member

Registered: 6th Dec 02
Location: Drives: E39
User status: Offline

7th Feb 05 at 17:53

quote:
Originally posted by Claire G
If you're going to put a silencer in you may aswell just put the cat back in.

you ver looked thru a cat and a performance silencer thungy! the cat is very dense, going to be alot more restrictive than a silencer that you can see thru!!!

G_Man

Member

Registered: 4th Dec 04
Location: Darlington Drives: Seat Leon Cupra R
User status: Offline

7th Feb 05 at 17:56

mine dus tht but mine has a hole in haha gettin fixed 2moro will see if the noise changes, but doubt it will

Scott McKenzie

Member

Registered: 16th Jul 02
Location: Aberdeenshire Drives: Corsa B 1.6 16v
User status: Offline

7th Feb 05 at 18:47

My Janspeed de-cat has a silencer, sounds nice, no rasping

FlamingCorsa

Member

Registered: 22nd Apr 03
Location: Shropshire
User status: Offline

7th Feb 05 at 23:01

andy you engine does not even need a cat and should not have one its and early engine before cats came in, so u wont need it in for mot!

de cats do mate car sounds louder and raspy, i am ripping one off orange car to put on green one! will some modifing i think:-S

Member

Registered: 20th Apr 00
Location: Northern Ireland
User status: Offline

7th Feb 05 at 23:37

My scorpion group a sounds sweet n no cat... passes mot too

Twiggy

Member

Registered: 15th Oct 04
User status: Offline

7th Feb 05 at 23:49

So your the cunt that wakes me up at 4am when you come in!

Dave A

USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
User status: Offline

8th Feb 05 at 00:16

quote:
Originally posted by Scott McKenzie
My Janspeed de-cat has a silencer, sounds nice, no rasping

i agree with this, my first de-cat was raspy as fook, put on the janspeed........no rasps!

mav

Member

Registered: 19th Jun 01
Location: Scotland
User status: Offline

8th Feb 05 at 02:19

When I decatted my 1.6 it sounded good etc on idle like yours but a bit raspy higher up..I just left it..Never bothered me...........

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