Downpipe.

My 97' 300tdi has started making a loud whistle from the passenger footwell when giving it a foot full. It seems to only happen under load and over 2000 rpm.

I'm guessing the flexi bit is blowing....? It also looks like I have a CAT...

Is the cheapest option to replace the down pipe without a CAT ?

How will that effect the MOT emmisions ?

Buy a 300tdi defender front pipe (non cat) and it'll be fine. Wont effect emissions by very much and there are ways round it .

Are you sure it's the zorst? I'd have a close look at yer turbo hoses just in case.

Get yourself a Defender non-cat downpipe, it makes a REAL improvement.

£21.25+vat from Paddock Spares.

Cheers
Dave