YueYC

Any chance you know where you buddy got the CF diffuser? I too am trying to setup a quad exhaust.

MrVu

I believe he got it from ebay.
Here is the link,
http://www.ebay.com/itm/REAL-CARBON-FIBER-REAR-DIFFUSER-4TIPS-FOR-BENZ-W203-C-CLASS-AMG-BUMPER-/171746719534?hash=item27fce6f72e&vxp=mtr

YueYC

This is probably a stupid question. The description says it fits W203 2002-2006 with AMG bumper package, will it fit a 2007 C230 stock bumper? And is the exhaust tip opening already cut out on the right side too?

MrVu

Not a stupid question at all! It will definitely fit the 07 model as long as you have an amg bumper and yes the right side is open.

YueYC

So the stock 07 C230 sports sedan has the AMG style bumper correct?

MrVu

Yes

YueYC

Haha thanks for your patience and info man!

MrVu

I might be selling my brand new cf diffuser since I am planning on running a custom functional one.

Here is a template I made and test fitted.


Just a test fit, the quad exhaust tips will sit in between the fins when ever I finish it.

MrVu

Hello everybody.

The past weekend has been a busy and productive one!
Made a custom flagpole from the factory tow hook for Fourth of July, cut my spare tire tub to make room, the bumper diffuser indent, and installed headers on the car.

I am ready.


Not for the faint of heart.


Came out nice and even.


Fitting diffuser template to position.


Cut the pipe/w muffler right after the sway bar to fit better then work the quad exhaust around the diffuser. This is a naked picture.


Finally I gotten around to installing the OBX headers, because honestly... Who wants to spend that much on Kleemans. We did this in the driveway of my house. Took about 4 hours for install and 4 more hours to figure out how to mount it back in with the cats. Long story short, headers installed, taking it to the exhaust shop Thursday morning to get the collector welded to the cats.



Dropped the exhaust.


Out with the old and in with the new!


Installed!


Here is a start up video running open headers. No, I will never run my car like this. This video does absolutely no justice in how LOUD it is.

///AMGSC

looking good!! and you're right about how loud the car will get with headers lol

TruTaing

Dude. I wanna see what the inside of your trunk looks like now that you've cut out the spare tub. Got pix of the trunk floor? :x

Also - stoked to see the final product w/ that diffuser.

k3hlan

Cool stuff. Keep the updates coming!

MrVu

Thanks man!
Yeah, I'm getting the Magnaflow 12468 in place of the xpipe and keeping it true dual. Might run mufflers or just tips not sure yet.


It is a 1inch think compressed wood or any wood you want to use. Just as long as it doesn't flex in the center. I used the trunk mat as a rough template then sized it off of that. When I am driving around I just leave my trunk mat on top of it.



Here is the cut out I made using a dremel tool, I left the support on because it was just way too much to cut away and it didn't interfere with the diffuser template so I didn't want to bother dealing with more plastic shavings in my face lol.

I sprayed the exposed side with Rustroleum Bedliner, and sealed the edges on top and the bottom with general purpose cement or any other sealers you want to use.



Here is the tub. Ta Daaaa!



Of course! Thank you.

TruTaing

Wow. That tub structure is no joke. Looks like its super well built.

I've always imagined removing the rear tub + creating a new space for the battery back there + legit space for dual exhaust + functional diffuser. So... Im really interested in seeing how your project turns out

MrVu

Thanks man! Yeah removing it definitely gives a lot of play back there especially if you don't use your spare. Honestly you could just put the spare laying on the trunk mat since I don't put anything back there anyways lol.

It'll be going to the exhaust shop Thursday morning to get finished up with the headers and cat section. Then I'll resume the diffuser build. I am still debating on running just the magnaflow 12468 in place as an xpipe or run that and mufflers as well. I'll have to ask a knowledgeable person on this issue.

MrVu

Finished up the 4 fin diffuser. Made the tray from 3/16 plexisglass and fins with 1/4,
the total cost was about $110. Before I started this project I bought a sampler set with different sizes and thickness, I would test the durability with a blow torch to some samples with no high temperature paint , to high temperature paint, and high temperature with thermal tape.

The blow torch test were pretty exaggerated as I stuck the torch literally right in front of the pieces. Then did a realistic test of heating it from a distance and making note that air would cool it down.

Simple enough, I liked what I saw and felt pretty confident about running a plexiglass diffuser.






Applied 3 layers of rustroleum high heat and ultra high heat paint rated for up to 1200 degrees.

I'll get a better picture up soon.


Then I ordered the Magnaflow 12468 yesterday and should be arriving tomorrow.

All that is needed to be done now is install the magnaflow 12468 where the secondaries are and run dual pipes back into a quad. Then I can go get an OE Tuning.

TruTaing

That looks pretty neat! Not too over the top either! Definitely interesting!

MrVu

Thanks, yeah that was the idea. To not go over the top with it. But wait there's more!
Something for you m272 guys out there to think about
*Teaser*

TruTaing

Nice intake! Whered you get that Y pipe from?

MrVu

It is part of the NeedSwings kit. It basically comes from the C32 design but with some altering to it. Such as the crankcase vent hose is shorter and gets a filter in place of the missing air box.

I'm currently talking to Rob from NeedSwings right now, great guy. That was a picture he showed me.

Cost a whooping $800. Gotta pay to play lol

MrVu

Cars on the lift getting the Magnaflow muffler/xpipe fitted. Question now is Quads or turn down exhaust?

Also, such a great difference in performance. Even on 19s I can feel a significant gain and my MPG hasn't dropped below 19, on the streets and highway. As oppose to before when I only got 13, 14, 15s. So I can't wait to be picking up the 17x9 Forgestar set up this week!

Still need a tune, AFR is off and gas smell to starting to kill me a little.

TruTaing

So how'd the new exhaust turn out? :P

MrVu

It is pretty good, the magnaflow is as close as it can be to the headers collector without removing the secondaries. My primaries are out and since the secondaries aren't honeycombed from what some sources told me, I'd figure I would just leave them in as a "hey those are my cats" reason lol.

You feel some big benefits from running the dual set ups with an X pipe as oppose to Y pipe into a slightly larger pipe like how it was stock.




The way our sway bars are, you can only run one pipe through the notch so I ran 2 pipes that went around the differential to set up for the quad when ever I get the tips in. As right now, the lowest point on my car is the pipes that run under the sway bars, but I am raising the car up a bit when coilovers come in, so not even worried lol

TruTaing

Im pretty sure i've seen people run both pipes to the left where the sway bar has space for the exhaust, you just have to run them close together. That way you dont need to raise the car or worry about scraping the swaybar.

Also - holy ****, no primaries?! haha. Need sound clip w/o axle back and primaries!

MrVu

Yeah oh course, I'll try this weekend to get a pretty detailed video on it