Porsche 911UK Forum

Welcome to the @Porsche911UK website. Register a free account today to become a member! Sign up is quick and easy, then you can view, participate in topics and posts across the site that covers all things Porsche.

Already registered and looking to recovery your account, select 'login in' and then the 'forget your password' option.

955 catalyitic converter

Voodoocars

Active member
Joined
18 Jul 2014
Messages
31
I noticed a slight rattle coming from underneath the other day so I got under and noticed that the driver side 2nd cat is rattling- possibly broken inside.
I noticed that bypass pipes are available. Would it pass an mot without the 2nd cats?
 
955 catalytic converter

Hi "Voodoocars"

I have an 05 Cayenne S and I replaced the secondary cats with the bypass pipes from Designtek...I think they were Europipes. The MOT was fine, the sound was not obtrusive from within the cabin, though definitely more vocal when pressing the loud pedal, and it sounds great from the outside! I like hearing my wife start it up and drive off down the road, stop at the junction and accelerate off!

Apart from the sound enhancing effect, especially when it has bedded in, I think the engine revs more freely...

Hope that helps....all the best!
 

New Threads

Forum statistics

Threads
124,359
Messages
1,439,496
Members
48,717
Latest member
Atlas.997
Back
Top