lhoang

this has probably been answered, but i figured somene can answer it alot quicker than me searching for it...

i don't want to lose my stock exhausts, but i want a little more sound...whats the easiest way to accomplish this?

what resonators or cats do i delete?

anybody have a underbody picture to piont out which parts get deleted.

thanks in advance.

Hazy1

Remove the resonator and secondary cats. Put an x pipe in place of the resonator. The sound is just a little more than stock at lower throttle inputs, but has a nice deep growl when you get on it. Sorry, I don't have any photos to help.

III II I I AMG

exhaust cutouts.. replaces the resonator spot.. press a button when you want loud.. press it again back to stock (but still sound of a resonator delete)

phatmitzu

Like Hazy1 said, remove the resonator and secondary cats. There will be no check engine light issues.

lhoang

are those pics before or after? sorry i've only had my car for a month and havent lifted it up to look under.

TIA!

ATKM5

Here you go,

Thats what I have:

Before/after pic:
https://mbworld.org/forums/showthrea...785&highlight=

Sound Clip:
http://www.youtube.com/watch?v=x4Xp6GmWj8g

Thats what I have, no resonator or secondary cats, x-pipe instead of resonators.

Good luck!

obsidian05e55

No CEL with the sec cats removed?

way2evil

go for the cutouts. they are loud when you want, than flip the switch and its just like stock

Timeless

Do you lose the low end power doing this because of lack of backpressure? I've heard that you do on some of these exhaust mods.

Thanks.

ATKM5

Car feels as strong as it was before, revs a bit better at higher RPMs actually. I like it a lot, BUT it is still not loud enough for me. Going for VRP long tube headers soon.

ATKM5

Nope I got nothing. Just don't remove the primaries

vegastrashed

I went in the opposite direct than ATKM5. My secondary cats and resonators deleted but I placed the x-pipe where the secondary cats were.

Stock:


Custom:


The reason why I went with this particular setup is I wanted to replace the stock crossover with another crossover (x-pipe) in the same vicinity. There was a reason why AMG put that stock crossover before the secondary cats. I just changed the type of crossover while deleting the secondary cats. I have no idea whether my setup or ATKM5's setup is best. I'm looking to get it dynoed soon to find out what my hp and torque numbers are.

NGS_E55

Possible to do these mods from a bolt-point to bolt-point to return to factory(lease)?

dyno

and what impressions ?

seems also you replaced with a smaller pipe diameter..

dyno

.. need only find somebody able and willing to install oem clamps

Blacksport350

What cutouts are those and do you have a sound clip?

FWIW, You have the best cutout install that I have seen on an E55 that doesn't involve a rear muffler replacement and a ton of custom work to route the "open" exhaust through one set of tips and the "muffled" exhaust through te other set.

Timeless

So basically you used an X-pipe instead of straight pipes is what I am seeing?

Thanks.

phatmitzu

Before. you simply replace them with a straight pipe.

Note:
There will be MINIMAL power gains with the secondary removal. If you want power gains, keep the secondaries and remove the primaries instead.

psuball1

If i was to remove my resonator and leave my secondary Cats would that help with sound but not affect hp?

way2evil

I have no idea who makes them, when it warms up I am going under the car to find a rattle i will look for you. They are awesome. When the wife is in the car they go off and she has no idea they are there sound clip is here

http://youtube.com/watch?v=zhDFwjomkKE

phatmitzu

By removing only the resonator, will help with the sound, but not by much. It will not affect the HP.

uthustler

ttt

NGS_E55

shorty headers and resonator delete make any extra? with resonator delete, when/where do you get resonance?

Timeless

But removing the secondary cats and running straight pipes will?

XLR82XS

You need this...

http://www.youtube.com/watch?v=QRHrlGzuDo0