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Old 06-02-2019, 01:37 PM   #1
kramykram
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12 NRS hard throttle bogging

I tried the search feature. I am not sure what you would call the issue. Whenever I throttle hard, I get kind of a bogging. But if I ease up on the throttle it will go with no issues. I have replaced spark plugs, not that the old ones were bad. But since I had her apart checking on things I figured why not. I cannot find any vacuum leaks. Any help or guidance would be great.

Thanks
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Old 06-02-2019, 04:23 PM   #2
Elgavilan
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Check the fuel pressure, you can borrow a gauge from most auto parts stores, it takes the same as for a Chevy. The Schrader valve is below the rear throttle body on the right side.

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Old 06-08-2019, 05:08 PM   #3
kramykram
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Quote:
Originally Posted by Elgavilan View Post
Check the fuel pressure, you can borrow a gauge from most auto parts stores, it takes the same as for a Chevy. The Schrader valve is below the rear throttle body on the right side.

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55lbs of pressure. If I am just revving in neutral no issues. It's just when I am moving.
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Old 06-08-2019, 05:09 PM   #4
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No collapsing hoses inside either. at least not the hard plastic ones.
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Old 06-08-2019, 06:25 PM   #5
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Ok so searched for hard acceleration bogging. A few hits. Some say a tune, some say map sensor. I am stock fully stock except the V&H exhaust it came with. I did go ahead and change the fuel pump today as well with a Quantum. But no luck. I do not have any aftermarket piggy back ecu's either. Wouldn't a bad map sensor throw a CEL
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Old 06-09-2019, 12:21 AM   #6
knight rod rob
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Bogging

Quote:
Originally Posted by kramykram View Post
I tried the search feature. I am not sure what you would call the issue. Whenever I throttle hard, I get kind of a bogging. But if I ease up on the throttle it will go with no issues. I have replaced spark plugs, not that the old ones were bad. But since I had her apart checking on things I figured why not. I cannot find any vacuum leaks. Any help or guidance would be great.

Thanks
Since you have aftermarket exhaust. I feel you should do a stage one program. Which may have already done when exhaust was added. But its worth a check to find out.
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Old 06-09-2019, 12:49 AM   #7
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I just ordered Dynojet Power Vision. So hopefully i can get some maps and see what I can do.
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Old 06-17-2019, 07:58 PM   #8
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Power Vision hooked up, tried 3 different tunes, it cleaned it up a bit. But instead of bogging down, then having to let off and slowly accelerate, it just bogs but keeps going.
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Old 06-17-2019, 09:00 PM   #9
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No codes thrown when bogging either.
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Old 06-18-2019, 11:21 AM   #10
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Quote:
Originally Posted by kramykram View Post
Power Vision hooked up, tried 3 different tunes, it cleaned it up a bit. But instead of bogging down, then having to let off and slowly accelerate, it just bogs but keeps going.
Since you now have the power to reduce guess work, run a log. I, we, can view it and see if all sensors are functioning within spec. Also, any cal you load will need to be dialed in, however, I've never seen any of them cause bog . If you want, send me the log to view sensors. Make about 15-30 minute log. I will pm my email.
Ron
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Old 10-08-2019, 01:24 PM   #11
jehines3
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Did you also clear fuel trims?
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Old 10-10-2019, 07:35 AM   #12
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Did you also clear fuel trims?

I did. But I have since changed exhaust and have run like 20 autotune runs and its not getting better. I have called a few places in Houston to see if I can get a tune, but they wont do it as they have told me the power vision is not carb.
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Old 10-10-2019, 08:11 AM   #13
jehines3
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I don't follow the "Power Vision is not carb" statement. Look through your past DTC's and see what comes up. As a test, unplug the MAP sensor on the airbox and start the bike just to be sure you get a reliable code for that. I chased my poor running issues for a while before finally just pulling the trigger and doing a Power Vision. Turns out the PO had had a shit tune flashed to the ECM and it just made the bike run bad in the 2000-3500range. Fuel map from Fuel Moto and runs like a whole new bike.
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Old 10-10-2019, 08:15 AM   #14
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Not carb exempt I believe it was they say. Not street legal. So they won’t touch it.


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Old 10-10-2019, 08:18 AM   #15
jehines3
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Shops are stupid. Your poorly running bike is worse for the environment and they should want to help fix it. Where did you get your tune from?
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