2011 R1200GSA struggling to accelerate at high rpm problem!!

all TCs I rode seem flatter at the top end than my hex head, (quite a lot less) but should still fly to 110 mph without thinking about it, sitting bolt upright with all the luggage on it

and easily rev to 8k in top and smash rev limiter 1 to 4 th gear
 
Delboy777 said:
I think your expecting too much from it. Its not a jap crotch rocket just a lister putting away :P:blast:D
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I'm one hundred percent on the page with OPO, this thing should not hold back, it should not need weird TLC on the throttle to encourage it to creep up faster

any revs after 3k, at any throttle setting you want (snap it open closed, as often and as wildly and you fancy) in any gear its should behave in a linear fashion making sensible power all the way from 5 to 8 k (with small exception around the engineered in emission and noise flat spot all bikes have - on these at 4200 to 4900) and rev out to the red line easily even on part throttle. It will just do it even faster on full throttle.

These things can smash a well tuned, very well ridden 350LC in to the weeds without trying... they are almost quick enough to beat anything on the roads.... in fact with road tyres, their brakes and aftermarket dampers nothing should be able to get past you on public roads... and yes I mean a fireblade the lot.... they'll all be in the shrubbery well before you get to forth - when its running right
 
botus said:
I'm one hundred percent on the page with OPO, this thing should not hold back, it should not need weird TLC on the throttle to encourage it to creep up faster

any revs after 3k, at any throttle setting you want (snap it open closed, as often and as wildly and you fancy) in any gear its should behave in a linear fashion making sensible power all the way from 5 to 8 k (with small exception around the engineered in emission and noise flat spot all bikes have - on these at 4200 to 4900) and rev out to the red line easily even on part throttle. It will just do it even faster on full throttle.

These things can smash a well tuned, very well ridden 350LC in to the weeds without trying... they are almost quick enough to beat anything on the roads.... in fact with road tyres, their brakes and aftermarket dampers nothing should be able to get past you on public roads... and yes I mean a fireblade the lot.... they'll all be in the shrubbery well before you get to forth - when its running right
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Yes i agree , however one mans perception is not the same as the next. What i mean, was that the op shouldn’t compare it to a 1000cc across the frame jap offering when it comes to acceleration in the roll on mode.


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yes, agree but there shouldn't be any weird holding back / throttle response issues. Any way you want to move that throttle grip (within constraint of 115bhp bike) it should respond instantly and in a relatively lively manner .
 
moonmanzn, you don't have any body work, garbage accessories, near the air intake do you.... surely if it won't rev out its the same in all the other gears just easier to spot as wind resistance makes more of an appearance or....

I still want to know the engine map part number? is it the same as every other UK bike gets ? its not got some strangled euro Frog or Scandinavian moped map has it ?
 
All of his sensor readings are in the same ballpark as my TC.
My I-Level is K024-13-08-510 which looks like a bug fix just before I purchased the bike.
What I don`t understand and have done a lot of searching for, is information on these minus Engine Load readings. Going from 39 at 75 mph cruise 23% throttle to -47 when the throttle is opened up to full.
These minus readings crop up at all rev ranges in all gears when the throttle is operated swiftly not necessarily to full. These minus figures don`t seem to effect injector pulse width, ignition advance, dwell angle or anything else. These minus figures appear in open and closed loop.
I have only seen these minus readings on the twin cams.
Any ideas ?
 
Mistacat said:
All of his sensor readings are in the same ballpark as my TC.
My I-Level is K024-13-08-510 which looks like a bug fix just before I purchased the bike.
What I don`t understand and have done a lot of searching for, is information on these minus Engine Load readings. Going from 39 at 75 mph cruise 23% throttle to -47 when the throttle is opened up to full.
These minus readings crop up at all rev ranges in all gears when the throttle is operated swiftly not necessarily to full. These minus figures don`t seem to effect injector pulse width, ignition advance, dwell angle or anything else. These minus figures appear in open and closed loop.
I have only seen these minus readings on the twin cams.
Any ideas ?
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traction control trying to help ???

all TC's I rode in normal TC setting its engine off at ANY possible opportunity
in sport you can still feel all the time, its fighting non stop, but its NOT drastically intrusive, and many may not notice its doing it...

on My K1300GT the bike only accelerated properly when you long hold the button up to turn the f***ing thing off, then it was a normal bike where the throttle did its job like a grown up motorbike
on my R1200 LCA all settings had full on moped mode.... even enduro pro turned the key off if the front got a small amount of air, but at least it left the throttle grip connected to the engine most of the time, NO other mode does.... but then enduro pro turns of the cruise control. So you sell the bike and get the old one out as its better...

Later LC bikes with the optional LCD dash, all 5 rider modes enabled [dongle plugged in] and post Jan 2018 software get a slightly more grown up mode that almost works... after I ripped them to bits and said how come a M5 as standard gets a hoodie mode (disables front drive and turns off the nanny), but a motorcyclist having bought all the toys and plugged in his dongle is locked in moped mode all the time
 
I did think of traction control but as it is not fly by wire and the injector pulse width and ignition timing are not affected I don`t see how the power is being reduced.
After lockdown I will have to go out and get a GS911 log with the traction control disabled.
Also log the AFR`s when the engine load goes negative.
 
My R1200GSA 2010 build had traction control which completely cut the power if rear wheel spin was detected. It was instantaneous and 100% so I guess worked on the ignition, not the fuel.
 
Hi Gents

Sorry just seen all of this, spent the day installing a cockpit cover. Voila...made me smile in these dark days.

Botus, Sir, I do not have anything aftermarket covering intake, I have checked all this a few times.

Mistacat and another gentleman highlighted the negative engine loads, I'm also stumped on that.

Two other gentleman state fuel starvation at higher rpm. One insists the fuel filter is partially blocked.

I have a F800GS I have been using for part swaps, tmrw I will take his whole fuel housing, jerry rig the connections as different, and see if that helps.

After that I will remove injectors and rig up a cleaning station with old battery and some carb cleaner.

I'm also going to bypass the Fuel Controller (before anything) test ride, and then check if I'm getting any fuel at the return line on left of tank.

I also ran the bike with no traction control and abs disabled and no luck.

Lastly, I have come from a 1100GS so not expecting Jap performance, hence I notice the lack of power over 5/6k.

I have had r100cs,R80, k bikes, xs650s mostly and still think that's there an issue high rpm.

As botus said it should still pull clean

I do very much appreciate all the advice and input and will keep testing any suggestions.

I have had 29 bikes in my 31 years on this earth and this bike far outstrips any I have ever owned....

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Ah forgot

My I level is 08 11 500 so pretty much software from when it was built

And also my cockpit
1d54684ca06374cf373f93905168a2ba.jpg


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Bin Ridin said:
My R1200GSA 2010 build had traction control which completely cut the power if rear wheel spin was detected. It was instantaneous and 100% so I guess worked on the ignition, not the fuel.
Click to expand...

This would have been my thought except I would not imagine the emission regulators allowing the ignition to be cut without the fuel being cut.
Under the minus / negative load conditions the injector pulse width is not reduced.
Also my 2009 bike which did not have traction control, would when 2 up, pick the front wheel of the ground with ease. Much to my wife's displeasure.
The TC with traction control manages to keep the front wheel just in contact with the road without a noticeable cut in power, comforting when making steep climbs in first and second gear 2 up on mountain roads. ( the traction control is very subtle).
There is a vast amount that I do not know about the management system on these bikes, but will keep searching for information.
 
Just as an after thought, I wonder if the ecu compares engine RPM versus gear position versus road speed, if clutch slip is detected it would go negative engine load ?.
 
I bloody hope not!!!

But yours had negative as well?

Mines got 18k. Doesnt feel like clutch slips as its picks front wheel up on hard acceleration and I don't get speed increase with runaway revs
 
Moonmanzn said:
Ah forgot

My I level is 08 11 500 so pretty much software from when it was built

And also my cockpit
1d54684ca06374cf373f93905168a2ba.jpg


Sent from my SM-N976B using Tapatalk
Click to expand...

Hmmm, the Clocks are not in square....Looks good otherwise tho. I've got a similar Set-Up
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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