C55 De-cat pipe

[BlackC55]

We have just made a de-cat pipe for C55's

It sounds truly amazing.

 

[artyman]

Nice piece of fabrication.

 

[whitenemesis]

Did the original step down in diameter like that?

 

[BlackC55]

yes.

 

[Cabe]

Has that car ever been driven, or just revved in the workshop? That undertray is too clean for a working vehicle.

 

[BenzedUP]

Top job mate.

Olly, post a video so we can hear it..

 

[hotrodjon]

nice piece of fabrication, what about m.o.t

 

[Shude]

nice piece of fabrication, what about m.o.t

As the C55 has four cats and this is only the removal of the two, rear (lesser) cats it is not a problem for the MOT.

The more I read about these de-cat jobs the more I need it! Pics saved into the "stuff I need to do" / car pr0n collection!

 

[Cabe]

Sounds (no pun intended) like Olly needs to organise another GTG

 

[just240]

Hi Olly,

Thanks for putting the pictures up! The pipe work looks fantastic! Can't wait until Friday to collect the car & then drive back home...... I will also record some video & put a link up on Friday afternoon/evening so that everyone can have a listen.

 

[Shude]

I think a dyno before and after with videos/sounds would be good. A place local to me should be able to do the dyno and will be impartial.

 

[just240]

I think a dyno before and after with videos/sounds would be good. A place local to me should be able to do the dyno and will be impartial.

Unfortunately I didn't have the car dyno-ed before the work, however I would like to get it done now & see if there has been any gains. Olly is also fitting Green Filters for me so those will be the only mods on the car at present.

 

[BenzedUP]

I dyno'd my car recently as I am going to fit AMS headers soon, so i'm doing a before&after runs.

standard the car pushed 374bhp and 381ibft.

I'm hoping to push the car up to 400+bhp after the headers and a re-map.

(maybe a de-cat if I like the sound..) can't wait to hear the video.

 

[BTB 500]

Will the forthcoming MOT changes affect cars that have been partially de-catted?

 

[Shude]

Will the forthcoming MOT changes affect cars that have been partially de-catted?

Depends on how stringent they're being and whether they are choosing to apply it retrospectively to older cars.

 

[eugekav]

Meaty

I would also like to thank all great post .I bet it sounds meaty.Can't wait to hear this little baby.Hope the mot is not a problem for you,I am sure you have it covered and again keep the mods coming, they are so good to see! and also turn me a slight shade of green but in a "I want that" so these things inspire and drive me forewardThanks for your time.

Euge.

 

[Justin1600]

Pipework looks good, you will love the difference in sound

 

[BlackC55]

Youtube vid on its way

 

[whitenemesis]

Youtube vid on its way

 

[MicB]

I used Longlife to remove my mid boxes complete with cats. and replace with s/s pipe.......interestingly with slightly different diameter pipe to match the ''upstream'' pipes.

Mic