Saeedg48

the day a reliable vender manufactures a quality downpipe for the new CLS is the day i dance like a little girl and post it on the forums!

..i'm dead serious

but for now heres a little video of a friends fully modded rpi m6 from yesterday..

http://youtu.be/VT5VbYFdEzI

if anyones done a downpipe for the cls can you please chime in on your thoughts or perhaps a little review.

thanks in advanced

_AMG_

I think MBH is developing DP's for the CLS63.

EcruisinUSA

I've seen quite a few people just go to the local garage and have them custom made. There's not much to it. If you're looking for a certain level of quality, that may not be your best option. But if you want to have the most control over the product, it might be.

oliver@velosdesignwerks.com

The downpipe is rather straightforward, the question is whether or not it makes power..

Saeedg48

from what i've heard downpipes make the most power on a turbo car. is this true? considering the primary cats are the only set of cats on this car it should make power, right? probably 600CLs?

i'd really love to see some nice downpipes + a check engine delete on a p31 car. or a check engine light bi-pass like akropovic does for the m3.

http://www.europeanautosource.com/pr...pressor-e9x-m3

oliver@velosdesignwerks.com

Typically downpipes do make power on turbo cars. The fact that this car only had a set of primary cats was interesting and a first for the most part on a US spec car. We tested the car with 3 different setups... resonator delete, primary cat delete w/ resonator by pass, and lastly primary cat delete with stock resonators.. By passing the CEL is no problem and can be done in the software. As far as the cats are concerned we did not see any gains with the primary cat delete on this car.

Saeedg48

thanks for this information, guess i won't be wasting my time trying to delete the primaries. i wonder why that is. perhaps i'll just focus on a resonator delete or something..the car is too quite.

c32AMG-DTM

Forum sponsor RPM North made a nice looking set of DPs.

_AMG_

+1

_AMG_

Man catless downpipes make this car sound INSANE!!!

https://www.youtube.com/watch?v=WNTS...eature=related

https://www.youtube.com/watch?v=Wp5V...eature=related

Ali_E55

guys,

you see it from outside as 1 primary cat, but inside there is 2 on each side.

the seconed O2 sensor is in the middle and there it is empty ( i saw it by my own eyes )

if anyone opened SLR exhuast, he will know what i am talikg about, because it is the same method, and i am sure it is less than 600 cell.

Ali_E55

and thi is mine

Ready2roll

that sounds incredible Ali. Did you ever dyno your car before and after the cat delete?

Ali_E55

no

didn't even tune it.

and now alot are saying 0hp gains out of it and some say max 10rwhp.

i returned my car back to stock exhuast.

blackbenzz

Reducing exhaust restriction on a turbo car increases power and spools the turbos quicker

Saeedg48

which is why i wonder why people haven't been able to make power. it's a fact that it will and should make additional power.

oliver@velosdesignwerks.com

In theory... but what if said turbos are too small...

Ali_E55

than we will need lager turbos or it is useless

Saeedg48

so when you experimented with these various setups, in your opinion which setup sounded better? primary catdelete or resonator delete? i know doing both is too loud..

Big Al22

Hey im the one with the RPM dps and I love the sound its perfect. Inside the car when you are just cruising it seems stock when you punch its loud inside the car you can hear the difference though not too loud you can still have a convo with the passenger and not have to scream but outside the car its crazy loud. That was my one concern since its my dd and its perfect.I have a couple flybys i will post up and make an inside video for you to hear

Saeedg48

can you describe the sound of the resonator delete

Big Al22

i dont have the resonator delete i only have the dps

i have the vids here

https://mbworld.org/forums/cls55-amg...os-inside.html

Saeedg48

awesome! so custom 3"?

Advax

Don't understand the benefit of "crazy loud"...just wondering

_AMG_

Its not a matter of being crazy loud, its a matter of making more power.
obviously the less restrictive an exhuast is (No cats, etc..) its going to be louder.
Look at the C63's for example, you fit a free flowing LTH setup on that car and its going to be VERY loud but will make alot of power as well.