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Cat Replacement Pipe
Posted: Tue Sep 27, 2005 10:25 pm
by The_Rossatron
I'm actually going the opposite direction that most people go - I bought my car with a CRP and want to stick the cat back on for the MOT - also I think I'll keep it on as the combination of the exhaust/induction kit and the pipe is doing my head in slightly for a daily driver.
Also find it hard to drive briskly and discretely at the same time!
Question was do you need to buy that gasket set everytime you change the thing? Also I have an MIL light eliminator - do I just keep it attached or should there be a sensor taped up to plub into the bad boy?
edit: sorry this should really be in the technical forum - my bad!
Re: Cat Replacement Pipe
Posted: Tue Sep 27, 2005 11:19 pm
by simon
The_Rossatron wrote:edit: sorry this should really be in the technical forum - my bad!
It is now

Posted: Wed Sep 28, 2005 9:06 am
by mac
S2?
Must be if your talking about MIL's.
1st things first - gasket cost pennies so makes sense to change it.
2nd - you'll need to install your post cat lambda and unless you have a tuned head that will turn the MIL off. If you don't have a post cat lambda (and you should) you'll need to keep the MIL eliminator and block the hole in the cat with a suitable bung (old spark plug is ideal for this task)
Cheers
Mac
Posted: Wed Sep 28, 2005 9:34 am
by The_Rossatron
Eliseparts do this: Full Stainless Steel Exhaust Fitting Kit £ 16.39inc which looks like it has the right parts - a gasket on either side of the pipe/cat.
I do have an S2, would the car fail its MOT with a sparkplug in the cat?

I'm sure the guy before me has just taped the sensor back and I'll hopefully find it somewhere
Posted: Wed Sep 28, 2005 10:05 am
by mac
The_Rossatron wrote:
I do have an S2, would the car fail its MOT with a sparkplug in the cat?
Probably not - they aren't allow to remove items from the car and it isn't clearly visable.
I would guess that we has tucked it up into the rear wheel arch.
Mac
Posted: Wed Sep 28, 2005 10:34 am
by Shug
The_Rossatron wrote:
I do have an S2, would the car fail its MOT with a sparkplug in the cat?
Not unless you plumbed in an injector next to it, wired it up and left it running during the MOT....
</Fast & Furious posse>
Posted: Wed Sep 28, 2005 10:55 am
by Rich H
The_Rossatron wrote:Eliseparts do this: Full Stainless Steel Exhaust Fitting Kit £ 16.39inc which looks like it has the right parts - a gasket on either side of the pipe/cat.
Don't know about S2, but for S1 I went to a rover dealer and got 1 gasket and 2 rubber mounts for less then £4 (MGF Parts) then find a nut and bolt seller for your bolts. Try under bolt and nut on yell.com much cheaper I got 4 ss nuts, bolts and washers for £1. Bit more faff but much cheaper (And no postage!)
/pikey
My 2p
HTH
Rich
Posted: Wed Sep 28, 2005 11:03 am
by Shug
Rich
Nail<->head
Geary's got some fantastic stuff and his engineering standards can't be faulted. He can pop in the odd comedy price for mundane stuff though...
Rover dealer for gaskets (assuming they are the same MGF bits for the S2) and
http://www.namrick.co.uk/ is a good bet for bolts.
Posted: Sun Oct 02, 2005 11:56 am
by The_Rossatron
Cheers for the help guys had already ordered those overpriced gaskets and bolts.
Have to say it was the most straightforward swap I've ever experienced - no hacksawing bits off or blowtorching stuff. Those undertrays do keep everything relatively protected from the elements.
Car is about 10 times quieter now! Just have to take it for a proper drive to see if it's toooo quiet. If not I might have a spare S2 flexible CRP which has covered just 3000 miles for sale.
Also didn't expect the CRP to have the sensor screwed into it! So just screwed it into the cat - where exactly does the MIL eliminator go?
