06 Street Bob problems
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5th Gear
Joined: Mar 2007
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06 Street Bob problems
I bought my 06 Street Bob from the dealer with a stage 1 and SE2 slip ons allready installed. After bout 1k miles it lost alot of power. I noticed that the exhaust coming from one of my pipes is cold compared to the other. 4 trips to the dealer and even fuel injector change hasnt helped. Any ideas?
Tourer
Joined: Aug 2006
Posts: 491
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From:
RE: 06 Street Bob problems
Maybe this is your problem?
Its very common for you to get use to the power that a bike,Car, what ever has and your body and mind tells you it feels slower. Beleive me I'm in the racing business and I see it happen everyday and thats why aftermarket parts are so big. I'm not doughting you but the 1000 mile mark is a magic # for us in the aftermarket world. LOL.
[&:]
Its very common for you to get use to the power that a bike,Car, what ever has and your body and mind tells you it feels slower. Beleive me I'm in the racing business and I see it happen everyday and thats why aftermarket parts are so big. I'm not doughting you but the 1000 mile mark is a magic # for us in the aftermarket world. LOL.
[&:]
Road Captain
Joined: Dec 2005
Posts: 591
Likes: 1
From: Land O'Lakes, FL
RE: 06 Street Bob problems
Obviously a dealer *should* be able to figure out if there really is a problem, but I've heard the horror stories so I guess you can't count on that. If you don't have another dealership nearby to get a second opinion from, maybe there are a few things to do that will either confirm everything is OK or help you identify the problem FOR the dealer. So I'll just toss some ideas out there in case something helps.
Which cylinder runs colder, front or rear? The rear gets less cooling air flow so it should run hotter.If you are checking exhaust temps after/during riding, that could be the reason why.
Or . . . I am wondering if you are idling or revingit at a standstill (without having ridden for while prior) when you notice this temperature difference. I believe the EFI is factory programmed to run that rear cylinder a tad bit richer to try to help keep it cool. You can't actually change the target AFR for front vs rear, however, the VE (volumetric efficiency) tables are different so they can be cheated to get get different AFRs front vs. rear.If they DO tune the rear a little richer, without the cooling air flow, that richer rear cylindershould actually becooler than the front.
If you're convinced whatever is happening isn't normal, I'd do some more troubleshooting on the ignition.I'd swap the plugs and see if there's a difference to rule out a plug problem. I think a plug can "work" without providing enough energy for a really thorough burn. Maybe one is gapped wrong? If you know a friend with a Dyna, maybe you can even borrow his wires to rule them out. I have no idea if the coils could be swapped front/rear but that's the only other ignition thing I can think of. I don't mean simply crossing wires (which won't work), but actually moving the coils to see if the cold cylinder changes to the hot cylinder.
Good luck and keep us posted!
Kevin
Which cylinder runs colder, front or rear? The rear gets less cooling air flow so it should run hotter.If you are checking exhaust temps after/during riding, that could be the reason why.
Or . . . I am wondering if you are idling or revingit at a standstill (without having ridden for while prior) when you notice this temperature difference. I believe the EFI is factory programmed to run that rear cylinder a tad bit richer to try to help keep it cool. You can't actually change the target AFR for front vs rear, however, the VE (volumetric efficiency) tables are different so they can be cheated to get get different AFRs front vs. rear.If they DO tune the rear a little richer, without the cooling air flow, that richer rear cylindershould actually becooler than the front.
If you're convinced whatever is happening isn't normal, I'd do some more troubleshooting on the ignition.I'd swap the plugs and see if there's a difference to rule out a plug problem. I think a plug can "work" without providing enough energy for a really thorough burn. Maybe one is gapped wrong? If you know a friend with a Dyna, maybe you can even borrow his wires to rule them out. I have no idea if the coils could be swapped front/rear but that's the only other ignition thing I can think of. I don't mean simply crossing wires (which won't work), but actually moving the coils to see if the cold cylinder changes to the hot cylinder.
Good luck and keep us posted!
Kevin
Big Kahuna HDF Member
Joined: Feb 2006
Posts: 23,881
Likes: 34
From: USA
RE: 06 Street Bob problems
You need to be more specific. Which exhaust is cold? How cold, can you touch the pipe with your hand after 30 minutes of riding? Have you tried changing to higher octane fuel? Try some Shell Vpower and see if it's different. FWIW, my bike was dynoed at 1000 with my stage 1 & sert. By 2300 the engine was fully broken in and needed a slight re-tune.
Before I did anything else I would change fuel to 93 octane & change the spark plugs. Make sure to gap them and put anti-seize on the threads.
Before I did anything else I would change fuel to 93 octane & change the spark plugs. Make sure to gap them and put anti-seize on the threads.
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