Spark knock - BMW Luxury Touring Community
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post #1 of 2 Old May 15th, 2008, 11:19 am Thread Starter
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Location: Amherst, NH, USA
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Spark knock

I haven't seen this topic on this site, but I have on the other sites. For those of us that experience pinging upon hard acceleration (I think this pertains to boxer engines, mostly) on late model RT's, BMW had sent out a bulletin and a software upgrade called, 11.0. The people that had the software upgrade done, said they noticed a great improvement. So, I called my dealer and asked if they had the upgrade and if I could have it done. They said they had the upgrade, but BMW sent out a service bulletin telling them to stop doing this upgrade as there was some kind of bug in it and it was causing other problems. No one on the other site, mentioned anything about this and all who talked about this upgrade, spoke very highly of it and recommended having it done. So, do you think my dealer is being square with me or is there something else going on ? I was really looking forward to having it done. It's not terrible, on my bike, but the pinging is quite noticeable under hard acceleration. Also, do octane booster additives help any ? I was thinking of trying them.

Thanks, Roy
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post #2 of 2 Old May 15th, 2008, 5:20 pm
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Location: San Jose, CA, USA
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Re: Spark knock

There was a post a while back about BMW halting the deplayment of 11.0, but I think they have an update beyond that now that addresses the problem. The RT should run fine on pump gas without any additives, just make sure you're using the recommended octaon rating, which may be premium grade fuel on the new RTs.

David Taylor
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