C63/C63S AMG
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Old 04-19-2018, 05:11 AM
  #126  
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Originally Posted by AlexZTuned
No problem! I'm going to order one of these very soon, I think it's exactly what this car needs - more bass and low end rumble! I always find myself giving the car some extra throttle for a stop to get the valves to open more. And if you're very observant, you'll notice that when stopped, the more pressure you put on the brakes the quieter the car idles. Easiest way to hear this is when using the "hold" function by pressing the brake hard quickly at a stop. It will shut the valves instantly and idle quietly even with the OEM exhaust button on. This is obviously something AMG programmed for noise regulation and pedestrian comfort.
I never realized that! And I use the hold function ALL the time. Must. Get. ASR module haha.

I really don't like the way the M177 sounds with catless downpipes, you lose that nice engineered deep AMG rumble and instead sounds really raspy and raw (not in a good way IMO). Not to mention the smell, I had catless DP's on my B5 S4 and it stunk! Besides, the gains you get going catless on the M177 isn't worth the trade-off in sound. If people were picking up 35-40 HP to the wheels, that would be a different story... but I don't think 20-30 HP to the crank is worth de-catting.

I think ASR + the secondary cat delete would be the best sounding setup for this car. Personally, I'm leaving the cats alone and will just be installing the ASR.
I appreciate the feedback. Just what I was looking for. But why not go with DP with high flow cat? There's a good bit of power to made there...
Old 04-19-2018, 12:48 PM
  #127  
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Originally Posted by AlexZTuned
No problem! I'm going to order one of these very soon, I think it's exactly what this car needs - more bass and low end rumble! I always find myself giving the car some extra throttle for a stop to get the valves to open more. And if you're very observant, you'll notice that when stopped, the more pressure you put on the brakes the quieter the car idles. Easiest way to hear this is when using the "hold" function by pressing the brake hard quickly at a stop. It will shut the valves instantly and idle quietly even with the OEM exhaust button on. This is obviously something AMG programmed for noise regulation and pedestrian comfort.

It's awesome to see the updated ASR module is literally one plug intercepted in the trunk (as opposed to two plugs on the actual exhaust flaps), so the install will be super easy... around 5-10 minutes.

I really don't like the way the M177 sounds with catless downpipes, you lose that nice engineered deep AMG rumble and instead sounds really raspy and raw (not in a good way IMO). Not to mention the smell, I had catless DP's on my B5 S4 and it stunk! Besides, the gains you get going catless on the M177 isn't worth the trade-off in sound. If people were picking up 35-40 HP to the wheels, that would be a different story... but I don't think 20-30 HP to the crank is worth de-catting.
I think ASR + the secondary cat delete would be the best sounding setup for this car. Personally, I'm leaving the cats alone and will just be installing the ASR.
Yeah I'm interested in this, too... check out this vid:


Is that what we can expect with these AVC Modules and AMG PE?? This is the exact sound I want from my car...

ASR-Daniel -- if this is what your module can do, I will order NOW. =P

From what it looks like, the only difference between the CETE product and ASR is that CETE requires you to tap into the CAN-BUS wires to let you control the module with the OEM Exhaust button, and the ASR module uses a key fob to control the module so that tapping into the Can-BUS wires isn't necessary (very nice).

Last edited by skim7x; 04-19-2018 at 12:58 PM.
Old 04-19-2018, 01:19 PM
  #128  
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Install is very easy. Finding a location to stick the 3m tape of the ASR module was not.
Old 04-19-2018, 01:20 PM
  #129  
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Originally Posted by skim7x
Yeah I'm interested in this, too... check out this vid:

https://www.youtube.com/watch?v=X1MhNw3feps
https://www.youtube.com/watch?v=hZWxJL_nADI

Is that what we can expect with these AVC Modules and AMG PE?? This is the exact sound I want from my car...

ASR-Daniel -- if this is what your module can do, I will order NOW. =P

From what it looks like, the only difference between the CETE product and ASR is that CETE requires you to tap into the CAN-BUS wires to let you control the module with the OEM Exhaust button, and the ASR module uses a key fob to control the module so that tapping into the Can-BUS wires isn't necessary (very nice).
oh my...that sounds good. Much better than PE with flaps open to stock values at idle.
Old 04-19-2018, 01:44 PM
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Originally Posted by ASR-Daniel
Hello, yes the sound in the second video (Black C63) is what you can expect in "Sport mode" with our module
At the blue one iam not shure if there is only the original PE or something modifyed..
Flaps are open all the time and in every driving situation.

regards, Daniel

Hi Daniel, we have atleast 10 people interested in the ASR valve controller. Can you sort a group buy for us please?
Old 04-19-2018, 01:54 PM
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Yup, I second a group buy... Paypal ready.
Old 04-19-2018, 02:08 PM
  #132  
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Originally Posted by munis
Install is very easy. Finding a location to stick the 3m tape of the ASR module was not.
Does your car sound like the cars in the YouTube chcli i posted above?
Old 04-19-2018, 02:14 PM
  #133  
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Originally Posted by ASR-Daniel
Hello, yes the sound in the second video (Black C63) is what you can expect in "Sport mode" with our module
At the blue one iam not shure if there is only the original PE or something modifyed..
Flaps are open all the time and in every driving situation.

regards, Daniel
Is there any protection against driving flaps closed at high revs? The other product seller states that their product has a safety feature which opens the flaps in case revs pass certain level.
Old 04-19-2018, 02:24 PM
  #134  
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Originally Posted by V8rumble



Hi Daniel, we have atleast 10 people interested in the ASR valve controller. Can you sort a group buy for us please?
Seriously, I'm ready
Old 04-19-2018, 03:28 PM
  #135  
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Originally Posted by skim7x
Does your car sound like the cars in the YouTube chcli i posted above?
I have a C43 so it is not a fair comparison. Cold Start is out of this world different and louder, burbles and cracks are much louder as well. Top end volume is unchanged. Low end volume is much much better. I am also getting a nasty snarl on high rpm liftoff.
Old 04-19-2018, 03:59 PM
  #136  
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This is a pretty good video that shows how the OEM AMG Performance Exhaust is programmed to dynamically open and adjusts the flaps based on RPM/engine load. At idle with the exhaust on, the valve is only about 50% open. It only opens to 100% for a brief second when revving hard. It acts similar when you're driving and under load, so forcing the valves to be 100% open should make a big difference even in part throttle.


By the way, whatever exhaust work is done to that Blue C63S Estate in addition to the CETE module sounds absolutely amazing. I haven't heard a better sounding setup on the M177 than that, very very similar to the GTR's stock exhaust.

Last edited by AlexZTuned; 04-19-2018 at 04:05 PM.
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Old 04-19-2018, 04:11 PM
  #137  
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Originally Posted by AlexZTuned
By the way, whatever exhaust work is done to that Blue C63S Estate in addition to the CETE module sounds absolutely amazing. I haven't heard a better sounding setup on the M177 than that, very very similar to the GTR's stock exhaust.
Agree that blue one sounds sick... Doesn't sound like catless either... I'm guessing 2nd cat delete and CETE valves open...

Edit: Actually based on the subject title I'm guessing it's exhaust work from "YIDO"... so no telling what sort of exhaust work was done.

Last edited by skim7x; 04-19-2018 at 04:40 PM.
Old 04-19-2018, 05:19 PM
  #138  
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I'm ready as well. Assume ASR will ship to North America?
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Old 04-19-2018, 06:09 PM
  #139  
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So after thinking about this for a few.....when I installed AWE switchpath exhaust, the valves when unplugged appear to be open 100%.
So.........couldn't we just unplug the valves and insert a few simulators (to keep ECU happy) and have the valves open 100% all times?
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Old 04-19-2018, 08:32 PM
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I'm in for the group buy! Got $$ waiting
Old 04-19-2018, 08:40 PM
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Originally Posted by Schulminator
So after thinking about this for a few.....when I installed AWE switchpath exhaust, the valves when unplugged appear to be open 100%.
So.........couldn't we just unplug the valves and insert a few simulators (to keep ECU happy) and have the valves open 100% all times?
Beat me to the punch... That's what we did for the e92's and the valves were left open... Going to try it out tonight...
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Old 04-19-2018, 08:46 PM
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Originally Posted by Schulminator
So after thinking about this for a few.....when I installed AWE switchpath exhaust, the valves when unplugged appear to be open 100%.
So.........couldn't we just unplug the valves and insert a few simulators (to keep ECU happy) and have the valves open 100% all times?
I like your thinking !!
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Old 04-19-2018, 08:52 PM
  #143  
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Oh.my.God. It works
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Old 04-19-2018, 08:53 PM
  #144  
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what do I need to go outside and unplug??????
Old 04-19-2018, 09:14 PM
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Now, it definitely works and there are no visible errors on the dash. That said, I feel like there is loss of power, especially at the high end of 2nd gear... it might just be in my head though... try it out and let me know what you guys feel... It literally takes 5 minutes to do.

Last edited by skim7x; 04-19-2018 at 09:16 PM.
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Old 04-19-2018, 09:34 PM
  #146  
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I did the same thing but unplugged the individual mufflers under the car. It certainly works, at low speed it's much louder...

Does seem like something has changed at higher speeds and when letting off the gas..

Drove in comfort race, switched to Sport + which turned the flaps button red on the center console. No CEL but only went for a short ride..

Skim7X you just saved me $400!!! I want to repay you the favor some how!!
Old 04-19-2018, 09:35 PM
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Guys you can't just unplug the exhaust valves (at the motor or in the trunk) or you will go into LIMP mode and it will kill your power/boost!! Do not do this unless you have simulators and the car is asleep or the battery is unplugged so it doesn't throw a code. You will need to clear the codes to get your car out of limp mode, and I'm not totally sure if you can do it with a regular OTS OBD-II reader.

I actually have a set of the AWE simulators in case I ever wanted to drop the OEM catback for the drag strip. I paid around $60 shipped for them last year. I didn't realize the valves opened up 100% when the car was off, I just checked for myself and confirmed they're wide open.

I will try installing the AWE valve simulators tomorrow and see if it keeps the valves open without any issues since I already have a set laying around. I'd still like the ability to revert back to the OEM controlled exhaust, but in reality I drive around with the exhaust on 99% of the time anyway... so this may be a cheap, temporary way to get the same effect as the ASR!

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Old 04-19-2018, 09:53 PM
  #148  
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Hmm. Can't say the car went into full Limp mode, but I did feel loss of power. Weird because it's not like the valves anything to do with performance... don't see why they would throw a code -- they sure didn't on my previous bimmer.

@Passat774, did you notice any power changes with just unplugging each individual exhaust flap, as opposed to unplugging the controller?
Old 04-19-2018, 09:58 PM
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Originally Posted by AlexZTuned
Guys you can't just unplug the exhaust valves (at the motor or in the trunk) or you will go into LIMP mode and it will kill your power/boost!! Do not do this unless you have simulators and the car is asleep or the battery is unplugged so it doesn't throw a code. You will need to clear the codes to get your car out of limp mode, and I'm not totally sure if you can do it with a regular OTS OBD-II reader.

I actually have a set of the AWE simulators in case I ever wanted to drop the OEM catback for the drag strip. I paid around $60 shipped for them last year. I didn't realize the valves opened up 100% when the car was off, I just checked for myself and confirmed they're wide open.

I will try installing the AWE valve simulators tomorrow and see if it keeps the valves open without any issues since I already have a set laying around. I'd still like the ability to revert back to the OEM controlled exhaust, but in reality I drive around with the exhaust on 99% of the time anyway... so this may be a cheap, temporary way to get the same effect as the ASR!

nice, let us know
Old 04-19-2018, 10:00 PM
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Hard to tell on such a quick test drive to see if it worked... Didn't feel slower idk...

The valves were certainly still opened the entire time


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