Jump to content

De-cat pipe with just the silencer.


Recommended Posts

I finally got around to removing the cat and replacing it with a straight-through pipe.As a result I can feel the turbo spooling earlier and i'm able to go through the the gears more quickly,the only downside is the increase in engine noise,that's why I was wondering whether a replacement down pipe exists with only the silencer ?

Link to comment
Share on other sites

I've only removed the first section,so there are still 2 silencers left the noise level has moved up a notch- it's not unbearable.I've been doing the same trip to work for a year with the def and i know religiously the exact parts ot the road where I change gear,since i replaced the cat i'm moving up gears much sooner it's really weird I'm now going up gradual climbs in 4th instead of 3rd logically I should get improved mpg although it's too early to say yet.

Link to comment
Share on other sites

is the noise really bad ? i want to do the same and am hopeing that it give an improved exhaust sound.

paul

I have removed both CAT and Silencer leaving only the small box at the back end.

Along with the already mentioned performance improvements I have a whistle from the turbo and a slightly raspy exhaust note. Has been through MOT since without problem and I actually quite like it.

Link to comment
Share on other sites

Hi I had a Def 300tdi which had a cat (the down pipe with a flex section and the cat, and a back box on from that) I removed the Cat / down pipe section and replaced with the Paddocks replacement and found it to be fractionally noiser, but the improvment in 'pick up' and economy outweighed a slight increase in noise . . . . Which gave it a slightly deeper noise which i quite liked :)

TME

Link to comment
Share on other sites

Yeah right-I would never go back to the original set-up but would like to find a way to reduce the noise level obviously the cat served as a muffler as well,if I used some kind of lagging on the down pipe would it help reduce the noise ?

Link to comment
Share on other sites

Do you mean noise while sitting in the vehicle, or noise while standing behind the vehicle?

exhaust sound out the back, mine got a nice turbo whistle and id like to improve on it, plus from what im led to believe removeing cat etc improves driveability.

paul

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy