Mid box silencer or straight through

During MOT inspection I was walking under the landie and the MOT bloke pointed out that I could do with a new mid silencer soon.

Having looked as you there is a silencer for about £35 or a straight through pipe for £40.

Any thoughts about which to get.

Get a straight through, makes a nice deep noise but not too loud. Wouldn't really say it gives you much performance wise.

I am straight through with de cat but kept the rear silencer. I have found as some , that the 300tdi likes a little back pressure in the low to mid range. Suttle but there. Mine makes a nice noise, not too loud until I floor it then it sounds mental. But bearable on motorway and day to day.

Its down to how much noise you want - I have a decat pipe and no rear silencer (as side exhaust) and I tried a straight through pipe for the middle silencer and it was too noisy for me, so on went the silencer again.

It might be quieter with the rear silencer on, but I never noticed any noise increase when I removed the rear box though......

Where are you? I have a brand new Middle box.

Discokids said:

Where are you? I have a brand new Middle box.

Click to expand...

East London

I would go with straight through. With regards to improvements on performance, well it is like all motoring things, nobody has the definitive answer but everyone likes to put there 2 pennies worth in!

Advantages- better sound and your engine will find it easier to breath through which may or may not improve mpg, performance etc. I have heard (excuse the pun) that it will increase cabin noise slightly

Oh, I'm in Derbyshire so not worth you travelling for.

Does doing the decat not give any performance improvement at all on a 300tdi?