front pipe with cat

[pinny]

i have a 300tdi on a N plate i have removed egr from turbo will removing cat have any effect on performance and will this affect mot will a kn filter help

[BogMonster]

people who have done it seem to think not much but it certainly wouldn't hurt! there's a recent thread (on Intl forum I think) from somebody who did this

apparently they pass MOTs no problems

wouldn't touch a K&N with a barge pole if used off road at all - more air through = bigger holes = more dust into the engine!

[Budgie]

Here's the link to the other thread: http://forums.lr4x4.com/index.php?showtopic=7877

I replaced the cat downpipe with a non-cat version and, apart from being loads cheaper, there wasn't much of a difference TBH.

It's been on there about 3 years now and the flexy part is showing signs of holes already, gonna try the Defender version next and hope it lasts a bit longer.

[pinny]

Here's the link to the other thread: http://forums.lr4x4.com/index.php?showtopic=7877

I replaced the cat downpipe with a non-cat version and, apart from being loads cheaper, there wasn't much of a difference TBH.

It's been on there about 3 years now and the flexy part is showing signs of holes already, gonna try the Defender version next and hope it lasts a bit longer.

hello replaced front pipe yesterday with a defender with no flexy it was the flexy that had gone on cat pipe ill just have to keep an eye on vibration but i cant see it being a problem ill see what hapens does sound a bit more throaty hard to tell if any more performance bosal make just the flex pipe which you can weld in for about 25 quid