dacls63amg

I am considering removing the secondary cats and putting in straight pipes in place of the cats. What do you guys think? Has anyone done this before?

shardul

iTrader: (1)

i thin you should start off by removing the resonator and putting a x pipe in it place.

TopEndS62

what are the benefits of doing either? any proof? been skeptical of doing this myself....

pullejo

I did it on my C32...pulled the secodaries & the resonator...and it produced the perfect tone.

http://www.youtube.com/watch?v=5UajEGhBLG0

I did lose some torque.

I have yet to do it on the E55 yet...but quite a few folks here in Atlanta have done it. It makes a MUCH more substantial impact on sound on our 55K's for sure and I don't believe the loss of torque has much of an impact.

LOCO 05' E55

My setup is a straight pipe no X no resonator.. Loud like a **** at WOT and you do loose very minimal low end torque like some have mentioned, breathes better for sure and might help up top as well, But currently installing a custom x which i hear gives you a better exhaust note and hopefully pick up the torque a bit..will report back when i do

shardul

iTrader: (1)

i had the same setup as you and then i put a x pipe i gained a lot of low end torque

shardul

iTrader: (1)

the x pipe balanced the exhaust gases on both banks, it also creates a vaccum effects as to where the exhaust gases are sucked out from the exhaust manifolds. Atleast this is what i have read about x pipes.

LOCO 05' E55

cant wait to see how it feels!!!

shardul

iTrader: (1)

you will be happy with the results. in terms of sound it will be a lot quieter

HadiLaw

I have headers and an Xpipe.. No cats, or resonators. Torque number are great, car pulls great, and it just sounds amazing!

930chas

Luis, you will love it!!!

DAGREEKNYC

Did my car and the car Woke up ! Removed the 2ndry cats and installed 3 inch pipe to the resonators . Sound NASTY !

HadiLaw

If i were to do it again, I would install a 3in from the headers all the way back to the exhaust with an xpipe in the middle. I think my pipes are 2.5in.

iceman-kimster

any sound clips?

Ohh.. and about how much does it cost to do this? I really want my car to sound better but don't want to spend the crazy money of a catback.

TopEndS62

THANKS FOR THE CLEAR UP....

gonzales25

Funny thing... I just had my secondary cats chopped off, They ran pipe to just before the connectors were my resonators used to be. The car actually pullls harder and sounds like a monster when I get on the gas. I'm still thinking about putting an x-pipe on it, from the inside it sounds good. I need to have my wife do a drive by in it for me so I can hear how it sounds from the outside.

HadiLaw

I don't have a sound clip of my system. headers $1500, Xpipe $700. Plus a few hunder to install the headers. You can have a shop install a simple xpipe from magnaflow for $100.. I think our car is an exact fit with the pontiac G8?

TopEndS62

Just found this from magnaflow

http://www.magnaflow.com/02product/s...e=main&id=8898

seems a bit expensive.....

sumit has the same exact thing cheaper

http://www.summitracing.com/parts/MPE-10782/

bigswin

No resonator or secondary cats either. I personally don't believe the hype about the x pipe over the straight pipe. I would just go with whichever is less expensive. Sounds better for sure!

iceman-kimster

Thanks for the info & pics....
Im assuming that any Muffler shop can do this right? All I have to tell them is that I want my secondary cats removed, and install a 3" straight pipe with an Xpipe in its place right?
Do you guys run straight pipes from there all the way out or do you guys get them welded to the stock mufflers?

MTV8

It sounds great on the 63. Go for it.

ATKM5

I have removed my secondaries and the resonator. Sounds wicked IMO. Here is a start up clip!

http://www.youtube.com/watch?v=eqNqpu1ACa0

PM me if you want more feedback!

EDIT: I installed straight pipes and no x...

badblackbenz550

HOLLY **** It's LOUD!!!

TTMotorsports

I hope I was able to help with your decision Justin.

Have your friend do the pipes like the pics I sent you and it will sound a little more aggressive while cruising but it will BARK when you stomp it!!!