S1000rr hesitation w/ PC5? - Page 3 - BMW S1000RR Forums: BMW Sportbike Forum
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post #21 of 51 (permalink) Old 09-07-2012, 04:59 AM
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I've had the same issue with my set up when on track. Come out of a turn, full throttle, quick shift, bog....then it's back on power. I can't duplicate the problem but it's happened to me last year and a few times this year. Usually it had been on a certain corner but recently it was a different corner at the same track.

I'm running full exhaust and PCV with stock air filter.


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post #22 of 51 (permalink) Old 09-07-2012, 10:17 AM
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Quote:
Originally Posted by Wild Pete View Post
I've had the same issue with my set up when on track. Come out of a turn, full throttle, quick shift, bog....then it's back on power. I can't duplicate the problem but it's happened to me last year and a few times this year. Usually it had been on a certain corner but recently it was a different corner at the same track.

I'm running full exhaust and PCV with stock air filter.


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Is the bog mid shift? I did notice sometimes when the shift lever doesn't fully travel the engine 'coasts' for much longer than usual during the shift.
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post #23 of 51 (permalink) Old 10-28-2012, 04:27 PM
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I have a quick question, could a new dyno tuning/remapping possibly make my 2012 BMW S1000RR with Taylormade full exhaust and PCV have a soft spot in the 3500 – 6500 RPM range?

But also had both tires replaced at the same time, so I am thinking wheel sensor issue maybe.

It feels like a flat spot or like the clutch/computer isn’t transmitting the power through the to the rear wheel. But the more time I ride it, it is looking more like the computer is cutting out, which leads me to sensors even more.

At first I thought it was wheel slip, but it seems sluggish and cuts in and out based on throttle response on low end rapid acceleration and seems to settle in around 7500 – 8000 rpm if throttle change isn't erratic.

First thing I tried, was to retrieve the custom tune (professional done by a local dyno / race shop) to save it and reload the original Taylormade tuning 12-012-005 to see if that would make it go away if the map was way off.

After all that, no real success getting everything back to what it was before the custom tuning, so I figured I would check the web/blogs.

If anyone could let me know your thoughts, or if you experienced something similar, did the rev limiter software switch in the PCV fix the issue?

I would greatly appreciate any and all help or advice to where I should look.

Wish I left good enough alone now, the bike was an absolute beast before all this.
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post #24 of 51 (permalink) Old 10-28-2012, 05:44 PM
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Quote:
Originally Posted by zr_scott View Post
I have a quick question, could a new dyno tuning/remapping possibly make my 2012 BMW S1000RR with Taylormade full exhaust and PCV have a soft spot in the 3500 – 6500 RPM range?

But also had both tires replaced at the same time, so I am thinking wheel sensor issue maybe.

It feels like a flat spot or like the clutch/computer isn’t transmitting the power through the to the rear wheel. But the more time I ride it, it is looking more like the computer is cutting out, which leads me to sensors even more.

At first I thought it was wheel slip, but it seems sluggish and cuts in and out based on throttle response on low end rapid acceleration and seems to settle in around 7500 – 8000 rpm if throttle change isn't erratic.

First thing I tried, was to retrieve the custom tune (professional done by a local dyno / race shop) to save it and reload the original Taylormade tuning 12-012-005 to see if that would make it go away if the map was way off.

After all that, no real success getting everything back to what it was before the custom tuning, so I figured I would check the web/blogs.

If anyone could let me know your thoughts, or if you experienced something similar, did the rev limiter software switch in the PCV fix the issue?

I would greatly appreciate any and all help or advice to where I should look.

Wish I left good enough alone now, the bike was an absolute beast before all this.
Did you leave the db killer in ? The first thing I would do is remove it if so. I have seen as much as a 10 horsepower loss in power due to this. Did you remove the o2 sensors? I didn't quite understand your post, did you take your bike to a tuning shop to have it tuned?
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post #25 of 51 (permalink) Old 10-28-2012, 05:56 PM
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I had the PCV and taylor made exhaust in for 5-6 months with no issue.

i brought it to have tires installed and dyno mapped to optimize the combination, for it was a 2010-2011 tune, mine is a 2012 and to see if the backfire could be corrected.

The db killer is out, O2's are in.

Unfortunately should have left well enough alone.

Hope this helps.
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post #26 of 51 (permalink) Old 10-29-2012, 10:54 AM
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Im no expert, but I thought the stock O2s came out when you put the Power commander on unless you were using something like autotune,and you would use the wideband o2 sensor from the autotune and not the stock ones. Good luck!
Quote:
Originally Posted by zr_scott View Post
I had the PCV and taylor made exhaust in for 5-6 months with no issue.

i brought it to have tires installed and dyno mapped to optimize the combination, for it was a 2010-2011 tune, mine is a 2012 and to see if the backfire could be corrected.

The db killer is out, O2's are in.

Unfortunately should have left well enough alone.

Hope this helps.

Last edited by Hernan; 10-29-2012 at 10:56 AM.
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post #27 of 51 (permalink) Old 11-04-2012, 06:12 PM
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hesitation

I had the same issue and after a lot of headache it turned out to be the secondary fuel module. We zeroed the map and it still did it. took the sfm out of the bike and problem solved. The o2 sensors should be removed if the bike has been dynoed, this will hopefully be the cause.

Current bikes:

2012 s1000rr
2010 cbr1000rr
2005 gsxr1000 (track bike)
2007 Harley davidson heritage custom
2002 kx250
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post #28 of 51 (permalink) Old 11-05-2012, 01:10 AM
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Have you had the PAIR valves blocked? Either at the airbox or with the block off plates - this is important.
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post #29 of 51 (permalink) Old 11-08-2012, 02:56 AM
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^^^^^^^^^^^^^^^^^^

What he said..
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post #30 of 51 (permalink) Old 11-08-2012, 08:13 AM
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

what they said

2013 s1k, Austin Racing GP3, PC V, fries and a drink
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