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Throttle Body Sync Question
Posted: Wed Oct 19, 2011 8:52 pm
by tmfirestone
I checked the throttle bodies on my 2007 R1200R yesterday using a Twinmax and found the left cylinder drawing more vacuum than the right. My question is what do I adjust to get them in sync?
Previous models had the big brass adjustment screw.
Thanks!
Re: Throttle Body Sync Question
Posted: Wed Oct 19, 2011 11:11 pm
by deilenberger
Most likely the valves.
There is no adjustment at idle. You can ignore idle - the ECU controls the air-passages that replaced the BBS via stepper motors. In all likelyhood - unless someone has dicked (tech-term) with your balance adjustment - getting the valves right will put it dead nutz on. Even though I wrote the DIY for balance for the BMW-MOA Hexhead forum, I've never had to actually adjust mine. Get the valves right, and the balance is right on (it's set at about 1,400-1,800 RPM..)
Here is the link to the MOA DIY:
http://www.bmwmoa.org/forum/showthread.php?t=35446 - you may have to be a registered member of the MOA forum to view it.