Exhaust Servo
- Thread starter Kickstand_Down
- Start date
Well.... I removed both exhausts today.... and went looking for free noise... but none was to be had on my March 21 made FE pure. Both flaps were open as per the general wisdom of it all.....(my bike has the servos removed).
It took me 20 minutes per side.... for hopefully 10 plus years of knowing.
It took me 20 minutes per side.... for hopefully 10 plus years of knowing.
Kanzig
Member
Is this a modification (removing the servos completely) that can be done without a service lift? I would be laying next to the bike on the garage floor and not sure it would even make sense to try doing this without lifting the bike up.
Did mine with the bike on it's sidestand... easy... 62yo.... but I consider floor work, bending, getting up and down as something to always do when ever possible.... use or lose it type of thing.... and I want to still be able to ride 10 plus years from now.... and not just old fellas bikes... big'n fast ones for me!
kate_brett
Active member
E
easily achieved on side stand.
moleculo
Active member
I doubt there would be a huge difference in idle noise with the stock mufflers. But I can sure tell a difference with the aftermarket ones I have, and I noticed with the drilled out stock ones.
vwjedi
Member
Did the delete today and here’s my thoughts.
You definitely won‘t end up with a snarling beast afterwards but if that’s what you want you got the wrong bike.
At idle there’s not much difference but it does have a slightly smoother baseline. Where you notice it is at low speed and off the line where it gets a deeper sound sooner. It also has a few more pops and farts on decel.
There’s also the added imaginary horsepower you get which is totally there. Getting an extra 10 bhp after might not be not untrue.
Before/after start ups at the link.
You definitely won‘t end up with a snarling beast afterwards but if that’s what you want you got the wrong bike.
At idle there’s not much difference but it does have a slightly smoother baseline. Where you notice it is at low speed and off the line where it gets a deeper sound sooner. It also has a few more pops and farts on decel.
There’s also the added imaginary horsepower you get which is totally there. Getting an extra 10 bhp after might not be not untrue.
Before/after start ups at the link.
moleculo
Active member
It doesn't make all that much difference with stick exhaust. I noticed the bigfest difference at idle and roll off after I changed the mufflers.
Carpathian
New member
Do you have a link to the specific heatshield you got from Amazon? Also which shorty exhaust did you get from Radiant as I dont see sizes or our specific bike listed on there site?
Josias
New member
I need 2 of these? https://www.bellissimoto.com/parts/...iminator-for-bmw-s1000-and-r-1200-1250-models ? I plan on doing the DNA intake box/filter and pro race 2 shorty slip on. Id like to do the exhaust servo mod as well. Is everyone just disabling int he open position or removing the servo and flapper all together?
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Did you ever get the fishtails back?
If so can you post pics of the backside of the mufflers so we can see where they cut them open?
I have the servos disconnected and I am using the servo eliminators. And yes you do need two of them.
I procured another set of headpipes and so a going to remove them on that set along removing the cats. I’ll see how that affects the sound with and without the stock fishtails.
I also have a second set of fishtails that I plan on having modified. Eventually I will have the gutted headpipes and fishtails powdercoated matte black.
vwjedi
Member
Just an FYI for all. I'm using the servobuddy eliminator modules and although they keep a light from flashing on the dash there is still a fault code on the ECU. Runs fine but it will show up when scanned.
Scott Semone
Well-known member
What's the code and does it translate correctly towards a condition within the exhaust system?
vwjedi
Member
I'll run the scan again when I get home but it said the ecu logs it as being partially open and stuck there. I think it stated at 15% open
Ulrich
Well-known member
Odd ... I don't get any fault codes for the servo buddy ... I will run another scan when I get a chance ... but so far I have seen nothing ... as a matter of fact when I look at the real-time engine telemetry it shows the servos activating and showing the angle that they are at ... but they are actually not there.
Longshot
Active member
Mine is saying Reinstall them immediately or the noise gestapo WILL BE NOTIFIED!!! 
Cornel
Member
I removed the servos, but not the flapper valve. Removing the flapper valve involves minor welding to plug the holes after valve removal. Removing the servos leaves the valve in the open position, held in place by the valve spring.
You do need two servo buddies (eliminators). I used this one and it fits perfectly: https://www.revzilla.com/motorcycle/servo-buddy-bmw-2010-2017?sku_id=1185159
The one in your link does not look like it would work, there is only one plug per servo, not two.
Juengst
New member
I ordered that part and it said it didn't fit my 2021 but the other number given given 1185159 said in the "details" that it fit 2010 t0 2023 BMW. Both of these say it doesn't fit my 2021 R18, so I ordered both and will return the one that doesn't seem right. Great info on these pages, thanks to all of you.