Vehicle & Technical > Discovery

Cat free exhaust parts???

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nishikigoi:
I'm going to remove the cat 8)

I don't want a rear box, that will just hit the mud :oops:

What I want is a cheap factory part solution, with a middle box but no rear box (probably going for side exit with flexi-pipe).

Should I/can I buy a CAT bypass (seen on ebay for about £60...ouch! :shock: ) I have a centre box but no rear box (factory) at the moment and just redirrect the tail out the side?

Or buy an early 300Tdi system with no cat BUT these look like they all have a rear box :x

I don't mind the extra noise, so what are my options?

 :(thinkhard):

ChrisW:
Mine is an early 300 system with no CAT. It has a centre box and a rear box if that's what you're after (without the rear box)?

I've also changed the front down pipe for a 110 300Tdi downpipe as this does not have the flexible section that only lasts six months  :twisted:
It's a straight swap for the Discovery pipe although it's a bit more of a fiddle to fit without the flexy bit!

Only thing you'd need to do is get someone to sort you out with the pipework for the side exit.

nishikigoi:

--- Quote from: "ChrisW" ---
Only thing you'd need to do is get someone to sort you out with the pipework for the side exit.
--- End quote ---


That will be flexible stainless like for boats  :wink:

DiscoJim:
I have done a similar thing with mine. I removed the centre silencer a few months ago in the hope of releasing a bit more power. I have already upgraded the intercooler so thought this would be worth doing. It made little or no difference to the power or noise.

Recently my front pipe suffered some damage so it was a good opportunity to do away with the CAT. I bought part number ESR2740, a non CAT replacement front pipe with flexi section, it is a straight swap.

The difference is good, it revs more freely, is much happier to pull away and accelerates better but I do feel that top end power is lacking now.

It sounds nice too, a little bit chav in built up areas but quite nice.

Skibum346:
Doensn't removing the cat have an MOT emmissions implication?  As in the standards are higher... remove the cat and you fail those standards as your vehicle SHOULD have a cat?

Skibum

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