RawBenz

Ok, so i'm bored and have started playing around with the wife's C63 against her wishes.

I'd picked up a cheap set of used headers for her car but have since been offered a good amount of $$ for them so i'm deciding whether i should keep them and install them on her car (that means ill have to get her car retuned) or just sell them and have a play around with a Straight Pipe System.

The car has a tune and sec cat delete, basically that's it everything else is stock, 18" wheels etc. I'm not going to go too crazy spending $$ on her car.

I'd rather spend the $$ on my 63.

So i was thinking of doing a full straight pipe system on her car.

That would be: res delete and primary cat delete just to have a play around. Has anyone done a full straight pipe set up on a C63?

I've had it done on other cars and i absolutely loved it.

Point is, should i or shouldn't i? And if anyone has done this can they submit a video?

Thanks

MaroonC63

I had my 2009 with straights from primaries to the mufflers. Sounded like a crazy loud Harley lol. If I'd recommend it,hmm I'd say since its all personal preference sure why not? Cheaper than headers and a exhaust system and the hp increase isnt bad. I'd recommend an x pipe, because well, the sound of my full ap which is equipped with an x pipe sounds better to me for some reason. I loved my old set up dont get me wrong, I'd say play around and go for it! A decent x pipe wouldnt cost more than 300 with install down the road anyways. Just KEEP the mufflers!!!

MaroonC63

Found a video of my car for ya.
Posting the link using my phone, let me know if it works!

https://m.youtube.com/watch?v=qbg7fPcTwao

RawBenz

That is ****.
Sounds better than my car and i have headers and a sh*tload of mods lol.

I love that RASP!

Quadcammer

why the hell would you modify your wife's car against her wishes? You like spending money to get *****ed at?

RawBenz

This is a dictatorship, not a democracy!

Quadcammer

nice, enjoy that.

RawBenz

Oh we do

Thanks anyway Dr Phil.

rediesel

I've wondered about just doing a primary cat delete for cost/convience. HMS has this setup which uses the stock headers, although I don't know of many using this setup.

avery.whss

my god that looks scary...you'll make everyone around you go deaf..and bleed from the ears

Youngin

This is my straight pipe. Love the loud sound and pops

OlegKouz

I am thinking of doing this as well...I have the sec cats + res out now with straight pipes and after only a month it is already too quiet for me...

#modbug

mikeyyyallday

where can you get a straight pipe for your primary cats?

RW Carbon

This has got to be crazy loud...Just asking to have her pulled over

RawBenz

If she has a tune already. Will removing primary cats throw up a code? Or will it adapt?

Also if it does throw a code is it a matter of just plugging into the ecu with a diagnostic and clearing it?

Mort

If the tune is set so as to not report or ignore the rear O2 senors you will be good to go. The ECU will adapt for the removed cats. There may be a small advantage to an updated tune for primary cat removal depending on the tuner. If the O2 sensors throw a code for the cat delete you will need an updated tune for no primary cats. If you can clear the code with a code reader it will just come back.

RawBenz

What about installing O2 sensor? Would that clear it permanently and how do you go about doing that?

ghiaguy

Back in the day I welded extended bungs in the exhaust pipe to move the o2 sensors out of the exhaust flow and eliminate the CEL. This was on OBD2 turbo DSMs and an early WRX. Same principal should work if you want to remove primaries without throwing a light...
will be LOUD on the 6.2 though

Kriston

My setup is straight piped all the way through into my Eisenmann Race cat back.


Secondaries + reso deleted. Sound pretty damn mean in person, enough to shake your insides. But its still extremely refined. I found the stock catback to be too raspy with the secondaries + Reso deleted.


Quick video of a dyno run I did with it.

ghiaguy

Wicked!! I assume the w204 have 'dyno mode' like the w203- did you use that setting for your dyno run?

Kriston

Yes its accessed through the Diagnostics menu.

149max

Do you have primaries?

Kriston

Yes Primaries still in place.


I will be doing headers next summer. Done with the mods for this season.

149max

Dam I wanna hear a car locally that has no primaries.

Gezim313

For everyone that thought hey how big of a ******* would this car sound straight pipe all the way back