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Old 05-17-2019, 09:39 PM   #1
monstah89
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Vrod muscle cherry hot exhaust.

Hey guys I’m still new here but I have a question. 2015 vrod muscle. AkrapOvic exhaust , dyno jet tune , 26 tooth front pulley. I noticed today riding with a few of my buddy’s tonight my rear exhaust at the flange at the back cyclinder was cherry 🍒 red.. I’m not seeing any topics on this but I do know that it’s not that good any ideas ?
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Old 05-17-2019, 10:59 PM   #2
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The rear cylinder is running lean, use your tuner and increase the fuel by 3-5 steps in the rpm band where you were running and see if that fixes it. If not you can always add more or put it back where it was.


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Old 05-18-2019, 08:35 AM   #3
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Ok I will see if I can open up the dyno jey program an see if I can adjust that. Thank you for your help.
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Old 05-19-2019, 09:28 AM   #4
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Hey guys I need help the problem has not been fixed. Nor do I know how to fix it with the tuning program. The bike was pretty much cold I started it up with a steady throttle at 2500 for not even 1 minute the exhaust was getting cherry red. I have a video but it will not let me post it.
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Old 05-19-2019, 10:02 AM   #5
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Quote:
Originally Posted by monstah89 View Post
Hey guys I need help the problem has not been fixed. Nor do I know how to fix it with the tuning program. The bike was pretty much cold I started it up with a steady throttle at 2500 for not even 1 minute the exhaust was getting cherry red. I have a video but it will not let me post it.
Short answer you need to tune it, not just run some generic cal or some other persons tune. Sounds a bit lean for sure but is it rear only or both. Without some log data throwing fixes at it is dumb. Make a log to identify what's going on first and go from there. I assume you have a PV tuner to do this? With a data log, at least then there's some direction to make correct adjustments with.
Ron
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Old 05-20-2019, 05:42 AM   #6
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Hey rob no I do not have the power vision I just ordered it along with the pro auto tuner.
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Old 05-20-2019, 08:55 AM   #7
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Originally Posted by monstah89 View Post
Hey rob no I do not have the power vision I just ordered it along with the pro auto tuner.
Target Tune would have been a better choice but the pro will get the job done. It will be rich as set for tuning but this can be modified and you understand how it works later. Problem is , once you go back to NB sensors, the Akro bungs need to be trimmed to minimum for good NB sampling and the low end retuned for NB using clb tables. Pro version is best suited for gathering data at higher loads and rpms, then removed from the bike. If you can switch out to TT instead on the order your life will be much easier.
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