Hi everyone,

Got an exhaust valve module to keep the exhaust valves open all the time.

Has anyone fitted these on a W213 sedan? Ive seems a few other threads on this but still struggling. I’ve found a flap in the rear boot panel behind the right hand side tail light. I can’t identify which wire in there is that exhaust valve plugs. The car is right hand drive so don’t know if the wire layouts are the same or different.

Any help appreciated.

Does anybody know specifically where the plugs are for the exhaust valve module? Are they in the trunk?

There's a wire harness that plugs directly to the location of the exhaust flaps in each of the exhaust ends near the tips. That's what you want o unplug and replace with the harness for the EVM. When you route the wire from the boot through the grommet, make sure to carefully tuck the wire behind the heat shield panels so as to protect the wiring from heat and road debris. I zip-tied the wiring to the underbody wherever I could find a place to do so.

so the car will need to be raised up for this surely?

Yes. I used 2 floor jacks to raise the rear and that was tight and uncomfortable but doable.

Didn’t need to when I did mine. No zip ties either.

Okay, thanks for the help

How did you fit yours? I have the sedan and you have a wagon, perhaps that makes a small difference in installation difficulty

I've installed one. Here is a link to the thread:

https://mbworld.org/forums/w213-amg/...ml#post7919974

That was a good post, @BC-2 . For the sake of clarifying what I did under my car, I took your picture and annotated in red the path where I ran that cable on the other side of that grommet behind the heat shields and under that plastic cover underneath that area, all the way to the exhaust ends on each side -- hope you're ok with that.

Thanks for the diagram @Drewsky00 ! I have a 2018 wagon with PE and just bought an EVM too. I managed to locate the rubber hole as circled, and pulled that out a few inches. However, when I tried to thread the EVM cables through the hole, it's not able to get past the silver heat shields to show up under the car, am I doing something wrong?

I also don't quite understand how the red line routing works, is that behind/underneath the foam lining? Thanks for your help

There are 3 overlapping heat shields all around the outside of that trunk area that you can access from under the car. Find the bolts that hold them in place and you can move them out of the way some to work behind them. That grommet hole comes out just behind the middle heat shield, so you will need to squeeze your hand behind that loose shield and feel for the cable you feed from inside the trunk. It's an awkward sport, but doable with a bit of patience. The red lines I drew in my earlier post indicate where I routed the cables on the other side of that grommet hole, on the outside underneath the car, not inside the trunk behind the foam. I ran them behind the heat shields to keep the cables safe from heat and road debris that might damage them. Hope that makes sense.

In the picture below, I've outlined in red the heat shield panels and circled in green the bolts that I undid to get behind them to route the cables. The blue lines indicate the path I routed the cables to each exhaust tip.

Thanks, I got it to work! I got my module from Thomas at Automotive Passion. Valves are now fully open but the remote doesn't seem to work, so they're unable to close. Is anyone else experiencing this issue? I am also getting boost limitations (boost gauge on dashboard is orange and doesn't go beyond 400hp) and car is limiting horsepower. I'm guessing the ECU thinks valves are closed and unable to open, therefore unwilling to produce more power? I saw another thread somewhere here but not related to EVM... will be taking it in to check out...

I keep my flaps open at all times, but my remote works and don't have any such boost limitations or warning lights of any sort.

same with mine remote is not doing a thing. Did you get yours situated?

My remotes never worked. I opened up the module itself and did see a blue light blink when I press the remote. That means the module is receiving signal from the remote but it just isn't doing anything.

Interesting thing is that the module DOES make my valves fully open and it somehow still works with the in-car exhaust button. It's bizarre but I actually prefer to control it with the in-car button... so I never bothered with it again

so the button in the car fully opens and closes the flap now instead of partially opening it. My in car button isn’t doing anything nor are the fobs I’m either stuck fully open or stuck in factory mode. When I shine a light down the pipe the flaps are wide open when vehicle is off

Yes, button in the car fully opens / closes the flap now for me.

Maybe check if the fuse was blown (somewhere under front hood on the driver side)? My fuse for the actuators blew during the initial install so the flaps were just stuck and not doing anything, going into soft-limp mode where the car wouldn't push past 400hp. After I replaced the fuse and gave it a WOT go it was back to normal

jiat confirmed I’m in soft limp mode . I appreciate your k owledge on the inside. Gonna check the fuse.

can’t find the fuse for the exhaust actuator. Or a blown one anyway. The PE light works and it just makes a clicking sound as if it’s trying to open or close them but no change in tone with fob or button. I’m thinking they’re stuck open. Wonder if they take the renntech EVM out if it will go back to normal. At this point the PE exhaust in working order was better then this.

Mind posting some pics of the EVM cable connection to the actuator modules? I remember the instructions said that they need to be plugged directly into the modules and not the extension cables that are closer to the rear bumper

I was present on the install and made sure they went directly to the actuator plug and plugged the original plugs into the rentech module and left the grey extension alone.

you had mentioned a blue light confirming your fob and receiver we’re communicating? Did u have to open up the receiver to get at that blue light?

I did, opened up the receiver and confirmed blue light is on when remote is pressed. Since you said there’s a clicking sound I’d assume the connection is good and valves are actually stuck… not sure if I can think of anything else. Did you ask Thomas for advice?

the clicking sound happens when I hit the PE button in the car. Nothing happens when I use the remote that came with the renntech EVM.

Not sure who Thomas is I’m new here .