X-Pipe and Secondary Cat removed... Video - Mercedes Benz SLK Forum

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#1 Old 07-25-2012
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X-Pipe and Secondary Cat removed... Video

I've had an x-pipe in place of the stock resonator for a few months now but always felt like the car could use a bit more. It was very mild compared to stock. Last week, I went back in to remove the secondary cats.

The car is louder, yes, but when driven normally, the increase in noise is hardly noticeable. Get a bit spirited on the throttle and the car is definitely louder. Some people may think it's too loud, but I like it. WOT sounds great! The initial start up growl is loud enough to make people jump. Cold starts are quite loud, but that only lasts for the first 15 or so seconds of the day.

The video doesn't quite do it justice, but this is just an idea of what an xpipe and secondary cat delete sounds like.

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Sold: '07 SLK280 | 18" TSW Bremmas | Toyo T1-R 225F/245R | SmartTop V.3 | Green Filters
Sold: '07 SLK55 AMG | 030 Package | Custom X-Pipe | Secondary Cat Delete | SmartTop V3.33 | Mod R170 Antenna | BC Racing Coilovers | Racingbrake Two-Piece Rotors | Enkei Pf-01, Michelin Super Sport 245F/275R

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#2 Old 08-05-2012
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Sounds like mine and I love it.
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#3 Old 08-05-2012
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Very nice!
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#4 Old 08-05-2012
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will this kind of mod pass CA smog?
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#5 Old 08-05-2012
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Originally Posted by r3v0 View Post
will this kind of mod pass CA smog?
nope it certainly will not.
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#6 Old 08-06-2012
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Saw replies in the thread, so I came in to read them. Watched the video again, now I want to go for a drive!

The sound is addicting and I can't get enough! I get compliments all the time from people. At my last autocross event, everyone was coming up asking questions about the car because of the sound it made while on the course. "Your car sounds way too cool!" coming from a highly modded Camaro SS driver.

Sold: '07 SLK280 | 18" TSW Bremmas | Toyo T1-R 225F/245R | SmartTop V.3 | Green Filters
Sold: '07 SLK55 AMG | 030 Package | Custom X-Pipe | Secondary Cat Delete | SmartTop V3.33 | Mod R170 Antenna | BC Racing Coilovers | Racingbrake Two-Piece Rotors | Enkei Pf-01, Michelin Super Sport 245F/275R

Current: '15 Alfa Romeo 4C | Black on Red | Track Package
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#7 Old 08-06-2012
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Yes, it is amazing the sound is with just that little mod. The wife loves it which means more stuff to come. Oh Yea!!!!
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#8 Old 08-06-2012
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what about headers and x pipe, would this pass CA smog and achieve the sound?
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#9 Old 08-06-2012
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Quote:
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Yes, it is amazing the sound is with just that little mod. The wife loves it which means more stuff to come. Oh Yea!!!!
I have friends who spent several thousands of dollars each on name brand exhaust systems for their BMWs. I spent 300$ and get the same effect.

Sold: '07 SLK280 | 18" TSW Bremmas | Toyo T1-R 225F/245R | SmartTop V.3 | Green Filters
Sold: '07 SLK55 AMG | 030 Package | Custom X-Pipe | Secondary Cat Delete | SmartTop V3.33 | Mod R170 Antenna | BC Racing Coilovers | Racingbrake Two-Piece Rotors | Enkei Pf-01, Michelin Super Sport 245F/275R

Current: '15 Alfa Romeo 4C | Black on Red | Track Package
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#10 Old 08-06-2012
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Originally Posted by r3v0 View Post
what about headers and x pipe, would this pass CA smog and achieve the sound?
You're deleting the two cats, so no I don't see it passing unless you put cats on it post headers.
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#11 Old 08-13-2012
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Autocross video from yesterday in 1080p HD!

https://www.slkworld.com/slk-videos/3...cross-%3D.html

Sold: '07 SLK280 | 18" TSW Bremmas | Toyo T1-R 225F/245R | SmartTop V.3 | Green Filters
Sold: '07 SLK55 AMG | 030 Package | Custom X-Pipe | Secondary Cat Delete | SmartTop V3.33 | Mod R170 Antenna | BC Racing Coilovers | Racingbrake Two-Piece Rotors | Enkei Pf-01, Michelin Super Sport 245F/275R

Current: '15 Alfa Romeo 4C | Black on Red | Track Package
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#12 Old 08-13-2012
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Thanks for sharing.... Easy in Fast out (might need higher tire pressure)???
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#13 Old 08-13-2012
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Funny you say that, I previously set front and rear pressures to 34 psi at the last event. This time, I ran 36 in front and 40 in the back. It definitely felt better.

Sold: '07 SLK280 | 18" TSW Bremmas | Toyo T1-R 225F/245R | SmartTop V.3 | Green Filters
Sold: '07 SLK55 AMG | 030 Package | Custom X-Pipe | Secondary Cat Delete | SmartTop V3.33 | Mod R170 Antenna | BC Racing Coilovers | Racingbrake Two-Piece Rotors | Enkei Pf-01, Michelin Super Sport 245F/275R

Current: '15 Alfa Romeo 4C | Black on Red | Track Package
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#14 Old 08-13-2012
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Look like fun sound great!
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