stephen emery

hi peeps
wondering which cat it is, looks like the middle cat that is removed ?
not sure though, thought it was the last one ?just before the back box?
steve

Caronte

The last one is in the center section. Than you have one in the downpipe (immediately after the turbo -in the direction of gas flow) and one in the Up pipe just before the turbo.

stephen emery

totaly confused now?
looks like to me that there is a cat on the last pipe just befor the back box? and another ( would be) in a pipe before that where the lamba sensor is?
steve

stevejohnson511

what your seeing in the centre section before the back box is
a resonator,not a cat.
Steve

stephen emery

whats a resontor then?
looks like a cat

[Edited by stephen emery - 5/13/2002 11:51:58 PM]

stevejohnson511

its a box with a pipe with holes in going straight through it,
it takes some of the noise out of the exhaust,but is not restricive.I thought mine was a cat and had a pipe made to replace
it,they cut the end off to make the new pipe.When i picked up the box i could see straight through it.
Steve

MATTeL

The cat is between the down pipe and the centre section, it is this piece of pipe that makes our exhaust system 4 pieces rather than 3 pieces like the Jap cars.

Something you need to bear in mind when buying exhausts from a Jap manufacturer and they didn't realise there was a difference!

Nathan L

This is what an MY01 ppp decat C/S should look like.



Nathan..

stephen emery

cheers chaps
anyone got pics of the other two cats.
can i get rid of one of the others?
steve

Mr Emery

bttt

NickAdams

iTrader: (5)

I've just taken the downpipe cat outta my MY01 and it is well worth doing as the car now pulls much stronger to the redline. (Thinkin about doing the up-pipe soon!)If you have PPP,I'm sure there are issues so maybe worthwhile speaking to Pete at Scoobysport and see what he recommends?

Good luck

P.S: As others have said,there are 3 cats on an MY01:

1 in up-pipe
1 in down-pipe
1 in centre section (Which gets removed as part of PPP)

Mr Emery

cheers
so there is a cat before the turbo that is the up pipe?
if i remove that would there be any disadvantages or advantages!
want to keep down pipe!
steve

NickAdams

iTrader: (5)

There is a cat before the turbo in the up-pipe and I've heard this gives another 12bhp or so on top of the gains if you were to do the downpipe as well.Just for info,I've read that the downpipe has the most restrictive cat!!!!

Nick

Dark Blue Mark

You want this mother****er!

MB

Mr Emery

that is a mother of a down pipe

will get the up pipe!!!
me thinks mapping from prodrive thngy may produce to much of a flat spot with the down pipe, tempting though!

any pics of the up pipe?
steve

NickAdams

iTrader: (5)

My mrs would kill me if I put part of my exhaust on the dinin room table!!!!!

lol

Nick

Nathan L

PPP mapping and full decat =

No flat spots and loads of torque to the red line. Ask the BMW 330 today

Not that I've just had mine fitted or anything

Nathan..

stephen emery

nathan then no probs?
did you get the box to clear the engine check light?
is there a worry about lambda sensor burn out and hence not able to go on boost till replaced?
keep hearing driveaility is knackerd with down pipe remove !
through this masive flat spot!(induced)
would defo be up for a full dect if it did not?
steve

BugEyed

MB

You're right, that is an MF of a downpipe. What make is it?

Duncan

Dark Blue Mark

Its a Magnex of my MY99.

Believe me, there is no drawback whatsoever in fitting one of these. Its big smiles all the way.

Im not joking about the smiles either.

MB

Nathan L

Steve YHM

Mr Emery

cheers m8
will have a gander when get home
thanks
steve