Calling all Throttle Body Experts - BMW S1000RR Forums: BMW Sportbike Forum
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post #1 of 8 (permalink) Old 05-18-2019, 10:54 PM Thread Starter
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Calling all Throttle Body Experts

Hey guys, A few weeks ago while doing a compression test on my 2011 S100RR I noticed the throttle body butterfly valves don't open all the way? Didn't think much of it until I was working on one of my other bikes and notice those valve opened a full 90 degrees at WOT (i.e. valve is straight up and down when looking into the throttle body). My S1000RR doesn't feel down on power or displaying any poor running symptoms. It revs quickly and the throttle is very responsive. Does anyone know if the valve should open all the way at WOT? Mine is only opening to about 33% based on what the PV5 shows. I cleared adaptations and reset the throttle via the HP RCK2 software, but I get the same result. I checked the TSP operation and voltage. It climbs steadily from about .5 volts to about 1.8 then stops. No dips or spikes or anything.

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RM4Two (aka ESBKLife)
2011 S1000RR Track Bike
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2012 MV Agusta F4 RR Street Bike
2013 Aprilia RSV4 factory Street Bike
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post #2 of 8 (permalink) Old 05-18-2019, 11:41 PM
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Quote:
Originally Posted by RM4Two View Post
Hey guys, A few weeks ago while doing a compression test on my 2011 S100RR I noticed the throttle body butterfly valves don't open all the way? Didn't think much of it until I was working on one of my other bikes and notice those valve opened a full 90 degrees at WOT (i.e. valve is straight up and down when looking into the throttle body). My S1000RR doesn't feel down on power or displaying any poor running symptoms. It revs quickly and the throttle is very responsive. Does anyone know if the valve should open all the way at WOT? Mine is only opening to about 33% based on what the PV5 shows. I cleared adaptations and reset the throttle via the HP RCK2 software, but I get the same result. I checked the TSP operation and voltage. It climbs steadily from about .5 volts to about 1.8 then stops. No dips or spikes or anything.
You failed to mention the year of the 2nd bike you were working on.

It is normal for the 10-14 TB blades to only open a partial amount. At least in my bench programming I have not seen them open what I would call about 25% or more.

now the 15/16 open all the way when you wrack the twist grip.

The 17/18 only open about 75%.

I have no clue why BMW program some of this stuff the way they do.
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Last edited by BMW_388; 05-19-2019 at 05:46 AM.
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post #3 of 8 (permalink) Old 05-19-2019, 08:58 AM
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You failed to mention the year of the 2nd bike you were working on.

It is normal for the 10-14 TB blades to only open a partial amount. At least in my bench programming I have not seen them open what I would call about 25% or more.

now the 15/16 open all the way when you wrack the twist grip.

The 17/18 only open about 75%.

I have no clue why BMW program some of this stuff the way they do.[/QUOTE]

Lot of great info and services you provide to forum members. Thanks for supporting the community.
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post #4 of 8 (permalink) Old 05-20-2019, 05:25 AM
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The new throttle bodies are split on the 2019/2020. For the RCK to access shutting down cylinders for TC. They also have a separate valve on each throttle body that controls the idle while the flaps remain closed.
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post #5 of 8 (permalink) Old 05-20-2019, 10:51 AM
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Originally Posted by bennymx View Post
The new throttle bodies are split on the 2019/2020. For the RCK to access shutting down cylinders for TC. They also have a separate valve on each throttle body that controls the idle while the flaps remain closed.
committed on this via this post

https://www.s1000rrforum.com/forum/b...ml#post2330206
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post #6 of 8 (permalink) Old 05-21-2019, 02:54 AM
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Quote:
Originally Posted by bennymx View Post
The new throttle bodies are split on the 2019/2020. For the RCK to access shutting down cylinders for TC. They also have a separate valve on each throttle body that controls the idle while the flaps remain closed.
As far as i know, this function is only available on the RCK Pro for the 2020 S1000RR
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post #7 of 8 (permalink) Old 05-21-2019, 03:00 AM
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As far as i know, this function is only available on the RCK Pro for the 2020 S1000RR
Which is what I stated.
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Last edited by bennymx; 05-21-2019 at 04:23 AM.
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post #8 of 8 (permalink) Old 05-22-2019, 02:42 AM
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Yes, but RCK and RCK Pro is not the same.

Cost difference is around 4000 euros.
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