• Welcome to the BMW R18 Forums. Member registration disables ads and allows you to post and share. Register Here.

Exhaust Flapper Valve Servo/Cables Removal

  • <i class="fa--xf fal fa-check "><svg xmlns="http://www.w3.org/2000/svg" role="img" aria-hidden="true" ><use href="/data/local/icons/light.svg?v=1726113578#check"></use></svg></i> Discussion starter Discussion starter Cornel
  • Start date Start date
Maybe I’m bad but after dropping the entire servo unit and cables, I pitched the unit in the trash bin. Servo buddies are plugged in.
 
Ledwa said:
I removed the plastic servo drive wheels. Cables still in place flaps sprung to open. So the servos still move and chat to the ECU but there doing no mechanical work. Prefer the sound and like the thought the exhaust is not being strangled
Click to expand...
I did the same but had an orange Engine light come on after a short ride. Did you ever get an engine light on?
 
No problems with mine after removing the cables only
 
Very interesting. Could it be OBD2 and Euro 5 engines that sense the servo load and give an error light? I removed the plastic servo wheels and after a long ride had an orange engine light appeared. I put the wheels back on making the system function and the light went out. is a 2023 bike
 
Ledwa said:
Very interesting. Could it be OBD2 and Euro 5 engines that sense the servo load and give an error light? I removed the plastic servo wheels and after a long ride had an orange engine light appeared. I put the wheels back on making the system function and the light went out. is a 2023 bike
Click to expand...
I went with the Servo Buddy modules in place of the removed servo motor controller module; I was concerned that the guided cables, could have the potential to get loosely tangled, since not being under any tension or load if left installed and electrically connected.

There's two cable anchor points on each "flapper" wheel, I assume the cables are in a "push-pull" type configuration, in order to retrieve the cable in the "push" configuration.
 
On my nine-t I unhooked cables only without the servo buddy. I have rode the thing many miles with no warning lights or issues. On the r-18 I purchased the pair of servo-buddies from Rev-zilla for the S1000R BMW model as it too has dual servos. I removed the entire assembly as It was visible under and in front of rear wheel. I have ridden a couple thousand miles with no problems other than It's still too quiet. Stay the hell outa blind spots it's so quiet. I had lots of trouble with birds on road-kill with stock mufflers on my K1600B. They don't hear you until your on them, then they spook and it gets very dangerous. I have come very close to disaster needing to duck quickly. So loud bikes save lives:)thumbnail (37).jpg
 
harrisrc740 the 18 is so slow that it's much safer as they can hear you before your on them. That 16bagger liked 80 plus mph. that's why I no longer own it.
 

Attachments

  • thumbnail (4).jpg
    thumbnail (4).jpg
    33.8 KB · Views: 4
My comment came due to a realization after I had a sport bike split lanes between heavy traffic I was in with my wife in the truck. The bike was SUPER loud but I never heard a peep from the bike until he was at my front fender and from a few miles away as he speed off ahead of us. After that incident I started paying more attention to if I could actually hear any bikes behind me and the answer was no without straining to hear them....
 
oldslodog said:
harrisrc740 the 18 is so slow that it's much safer as they can hear you before your on them. That 16bagger liked 80 plus mph. that's why I no longer own it.
Click to expand...
Lol what do you mean by slow? Yes slow in comparison to rice or spaghetti rockets ... But Uschi eats Harley's for breakfast! ;)
 
Perhaps a dumb question, anyway…

If I disconnect the electronics to the flappers just to try it out (without servo buddies), will the check engine light turn off when I reconnect it again?
 
R18skane said:
Perhaps a dumb question, anyway…

If I disconnect the electronics to the flappers just to try it out (without servo buddies), will the check engine light turn off when I reconnect it again?
Click to expand...
Just disconnect the cable anchors from the flapper pivot wheels; however, leave the servo module in place and electrically connected in order to avoid throwing an error code.

If you like the new exhaust sound and want maintain that configuration, then purchase two Servo Buddy modules and move forward with the removal of the entire assembly and installation of the two Servo Buddy modules.

Easy-Peasy..!!
 
R18skane said:
Perhaps a dumb question, anyway…

If I disconnect the electronics to the flappers just to try it out (without servo buddies), will the check engine light turn off when I reconnect it again?
Click to expand...
I did that and the engine light stayed on even after I reconnected the electronics. After a few rides it disappeared. But I believe it is recorded and if you don’t want the dealer to see it, you need to clear it with an OBD device.
 
Spartan said:
I did that and the engine light stayed on even after I reconnected the electronics. After a few rides it disappeared. But I believe it is recorded and if you don’t want the dealer to see it, you need to clear it with an OBD device.
Click to expand...
Thanks for the heads up. That’s exactly what I wanted to know.
 
You must log in or register to reply here.
Back
Top