Fitting a X pipe to a V8 Kompressor

[C240Sport97]

That look really good, bet it sounds even better. Hope you dont mind me asking, how much did the conversion cost, thinking of having it done on my CL55K.

not nearly as much as you would think for the work involved

 

[DSB SL AMG]

not nearly as much as you would think for the work involved

Old thread but I am thinking of doing the same work on my E55k...did you also remove the resonators?

I understand the system will have secondary cat > resonator > rear silencer > backboxes... can someone please clarify.

Thanks.
David.

 

[C240Sport97]

resonator and rear silencer is the same thing

 

[DSB SL AMG]

that was quick...thanks for reply.

Reading your thread you kept your secondary cats due to balancing and removed the rear silencer?

My exhaust man tells me removing rear silencer will make it really loud but from your great thread, i think its exactly the sound (deeper note) i am after...not sure i will go for X pipes probably straight pipes, have you got a youtube clip of your exhaust sound after mod?

Thanks.

 

[Alps]

DSB - Sean removed the middle box not the rear boxes,

you have

primary cats>secondary cats>middle box > rear box

 

[DSB SL AMG]

ok thanks , but i am also thinking of removing the secondary cat, i am now not sure if i do this it will cause the system to be unbalanced?

 

[SavMan]

ok thanks , but i am also thinking of removing the secondary cat, i am now not sure if i do this it will cause the system to be unbalanced?

I have primary, secondary cats removed and centre box removed. i have an x-pipe and standard rear boxes as straight through or no rear silencers/mufflers would be insane. Mine is loud at anything above 2000 rpm or 25% throttle, on the motorway it is noticeably louder but not obscene. Full acceleration is simple mental, I would recommend either an x or h pipe so as to balance the pulses and don't go above 70mm for the pipework (I have 3 inch and it makes for a very different sound without any performance advantage) thicker steel will also help with a nicer sound.

 

[C240Sport97]

that was quick...thanks for reply.

Reading your thread you kept your secondary cats due to balancing and removed the rear silencer?

My exhaust man tells me removing rear silencer will make it really loud but from your great thread, i think its exactly the sound (deeper note) i am after...not sure i will go for X pipes probably straight pipes, have you got a youtube clip of your exhaust sound after mod?

Thanks.

my plan was only to remove the resonator.

went for a X pipe anyway because I thought more 'balance' would be better.

don't have a youtube clip, in fact, don't have a youtube account.

ok thanks , but i am also thinking of removing the secondary cat, i am now not sure if i do this it will cause the system to be unbalanced?

if you remove the secondary cats and the resonator, you will need a balancing pipe somewhere along the line.

I have primary, secondary cats removed and centre box removed. i have an x-pipe and standard rear boxes as straight through or no rear silencers/mufflers would be insane. Mine is loud at anything above 2000 rpm or 25% throttle, on the motorway it is noticeably louder but not obscene. Full acceleration is simple mental, I would recommend either an x or h pipe so as to balance the pulses and don't go above 70mm for the pipework (I have 3 inch and it makes for a very different sound without any performance advantage) thicker steel will also help with a nicer sound.

have thought about removing secondary cats, but am worried it will make the car too loud.

 

[SavMan]

I heard the E55 that PCS worked on, seriously loud made mine sound as if it was clearing it's throat rather than growling!
Agree with Olly partially gutting the rear boxes makes it almost C63 sounding.

This is mine at 90% throttle, sorry about the music my 11 year old daugher made the video. Best to play in HD for sound

[YOUTUBE HD]pVx54wSXCd4[/YOUTUBE HD]

 

[DSB SL AMG]

Thanks for all comments...Have decided to get the secondary de-cat and resonator removal...

I know from reseach (and this post) that the system is balanced before the secondary cat so dont really need X pipes, as straight pipe would be sufficient in place of res...however still not decided on this, what would be the real difference in sound? i would think that the X pipe would give a more muted / dampened sound?

PS. Spoke with Acid today at MSL, really helpful guy!

 

[John]

I considered the X pipe but my understanding from one of the forum's most eminent experts that it doesn't make a huge difference.

Mine has secondary CATs removed so would be interesting to hear what yours is like with the resonator...

 

[Alps]

David,

have a search on mbworld on the subject as this has been discussed in detail to the extent where the centre resonator was pulled apart.

to avoid droning , i would defo put a xpipe in.

Alps

 

[DSB SL AMG]

David,

have a search on mbworld on the subject as this has been discussed in detail to the extent where the centre resonator was pulled apart.

to avoid droning , i would defo put a xpipe in.

Alps

Hi Alps,
After researching all MB websites (including MBworld) and speaking to several performance exhaust specialists....i really cannot find any evidence that suggest fitting straight pipes (in place of resonator) causes 'droning' affect...

It seems X pipes are fitted because they look better and give a slightly different dampened sound, flow, and balance IF system required...would be great to hear from someone on here who has secondary de-cat and res removed with straight pipes, but i think i will be the first, at the moment it looks 50/50 between who fits X pipes and straight pipes....thanks again for your comments, they are all appreciated.

Cheers,
David.

 

[C240Sport97]

you need to have a balancing pipe somewhere along the line .. otherwise your exhaust will sounds like 2 4 cyclinder engines rather than 1 V8

 

[DSB SL AMG]

you need to have a balancing pipe somewhere along the line .. otherwise your exhaust will sounds like 2 4 cyclinder engines rather than 1 V8

Spoke with Matt @uk exhuast...system does not need balancing pipe :-

"linking pipe at the secondary cats meant that X pipe was not needed to replace the center silencer (which had an AMG stamp on it), as the exhaust system was already ‘balanced’ at the secondary catalysts stage"

The W211 E55 / CLS55 exact same system (same platform)...bonus really.

Thanks for info anyway, as most would need balancing...

 

[C240Sport97]

Spoke with Matt @uk exhuast...system does not need balancing pipe :-

"linking pipe at the secondary cats meant that X pipe was not needed to replace the center silencer (which had an AMG stamp on it), as the exhaust system was already ‘balanced’ at the secondary catalysts stage"

The W211 E55 / CLS55 exact same system (same platform)...bonus really.

Thanks for info anyway, as most would need balancing...

I was referring to your plan (see below) to do secondary decat (which would remove the balancing pipe) and the resonator, meaning straight through from exhaust manifold to exhaust pipe with no balancing pipe

".would be great to hear from someone on here who has secondary de-cat and res removed with straight pipes, but i think i will be the first,"

 

[SavMan]

Spoke with Matt @uk exhuast...system does not need balancing pipe :-

"linking pipe at the secondary cats meant that X pipe was not needed to replace the center silencer (which had an AMG stamp on it), as the exhaust system was already ‘balanced’ at the secondary catalysts stage"

The W211 E55 / CLS55 exact same system (same platform)...bonus really.

Thanks for info anyway, as most would need balancing...

Am I missing something?

I thought you were going to have the secondary cats removed? If you are how are you going to leave the balance pipe in place the cats are surely to close to make it feasible. While posible the additional fabrication time needed would surely mean it would be sensible to just remove the secondary's and the adjoining balance pipe and fit a simple H pipe.

 

[SavMan]

I have to stop doing that!


Open a thread click reply then go make a coffee, come back type an answer and click send. Go back to thread to see that someone had already responded along the same lines!

 

[DSB SL AMG]

yes correct with de-cat will need H type support brkt....well will let you know results of what i chose and post some pics of results....

Cheers,
David.

 

[John]

yes correct with de-cat will need H type support brkt....well will let you know results of what i chose and post some pics of results....

Cheers,
David.

Need audio too!