PaulRicciardi

Figured you guys may wanna see this:

Resonator delete
2.75" straight pipe in place of the resonator
Single chamber race muffler

It was simple, didn't take too long, and pretty cheap. Sounds pretty good I think and the car seems to pull a bit harder on the top end.

http://www.youtube.com/watch?v=AcK8WZs60TE

svt ricco

take some rolling shots at wot

AMGC

rattlerattle

PaulRicciardi

Yeah I've got no idea what that is...not the exhaust as the car had the little rattle before the exhaust was put in.

Seems to only do it within the first minute of the car being started, then it goes away. Doesn't seem to make a difference if it's a cold or warm start.

Video was on a warm start.

M-bENZ

Ok what is the brand of that muffler ? how about the second cats ? did you removed that also ? I like the sound in that clip

Andy

Nightflyer

Very nice clip, sounds hot.

PaulRicciardi

It's a Flowmaster Delta 10
The website has it listed under the "race" section. Local muffler shop had one kicking around.

Also, the car has all of its cats

M-bENZ

Thank you sir.

Andy

PaulRicciardi

Well, it's not WOT, but still gives you an idea. And yes, that nasty rattle is in this video too.

http://www.youtube.com/watch?v=kK5TK74PdTM

drwavedawg

is the muffler a 2.75 in too?

PaulRicciardi

Drwave-the muffler isn't offered in 2.75", so it's the 2.5" muffler with a reducer pipe between the muffler and the straight pipe.

On the outlet side of the muffler (since it's a single outlet) there's a short Y pipe to let me keep the two stock tips. I was initially worried about having that Y right at the end of the system but it doesn't seem to have caused any problems.

jayrasheed

post pics here plz

PaulRicciardi

Two shots-should give you an idea of how things are setup

drwavedawg

^thats a very nice set up.... thanks for the pics. what kind of y-pipe is that... looks like a magnaflow? did you lose any low end torque with this set up?

PaulRicciardi

I actually don't know the brand of the y-pipe, it's probably magnaflow as you say. It's just something we had around the shop...the shop carries both magnaflow and flowmaster, so could go either way.

It doesn't feel like I've lost any torque; stepping on the gas in 1st gear still makes the ASR light flash like a disco ball. The butt dyno says the car feels more willing to be revved and pulls a bit harder than it used to from 4,000 RPMs and up.

Still, I won't know for sure until I dyno the car.

Waiting on the headers from P1 Performance and then I'm going to track down a Gruppe M CF intake. After I get those two items in the car I'll bring her to the local dyno and see what she does.

appatula

Paul that sounds beastly!! I've got a 40 series muffler sitting in my garage doing nothing..... future mod possibly?? Does it drone at all at cruising speeds/highway at all? I had both magna and the 40 series on my 300E and I could not stand it, the drone was awful. But nice sound man, it sounds like a friggen V8!

PaulRicciardi

Thanks man, I'm pretty happy with it...just gotta fix my ratte!

Honestly the car is more annoying at 2,000 RPMs in 4th gear around town then it is at 3,500 RPMs on the highway. Lower down in the rev range it's quite "bassy" and the autobox in the car always wants to be in 4th gear. I won't lie, there is a bit of a drone on the highway but it's not bad. I've made a few 2 hour highway trips in the car since having the exhaust done and have been fine.

I'll put it this way-it passes the "girlfriend test" with flying colours. She doesn't think it's too loud under normal driving, on the highway at 80mph we can carry on a normal conversation, and she loves how it sounds when I stand on the gas.

appatula

Thats exactly what I was implicating, "The Girlfriend Test" haha. Thats a huge factor for me as the drone would only be about a quarter as annoying as my GF breaking my ***** about it. I will really have to consider popping the 40 series on my "soon to be" C36, just got some new nozzles for the Tig, it'll be fun.

Also you might want to look into some sound deadening to really keep out the road noise and the little bit of drone that exists. Elemental Designs has some good stuff, and at $1.00-$3.50 per sq foot you can't go wrong.