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Discussion Starter · #1 ·
What could be wrong. I removed 2 of the secondary butterfly valves and it wouldnt rev about 4000 RPM so I took it to get a custom map done. That didnt work so now Im picking the bike back up to put em back in so I dont get charged $60 an hour for them to try and figure out whats wrong. Will this fix my problem? Hass this happened to anyone else? :heyyou:
 

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What could be wrong. I removed 2 of the secondary butterfly valves and it wouldnt rev about 4000 RPM so I took it to get a custom map done. That didnt work so now Im picking the bike back up to put em back in so I dont get charged $60 an hour for them to try and figure out whats wrong. Will this fix my problem? Hass this happened to anyone else? :heyyou:
Im confused..

You removed the secondaries and then had it mapped..
Now I am wondering why the tuner who tuned your bike didnt notice this?

And when you said "2 of the secondary butterflies"... did you remove just 2 ?
 

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Discussion Starter · #4 ·
I just put the butterflies back in and the bike still runs like shit. It has the same map that I used to run. I jsut changed the plastics and the headlight assembly on my bike. Is there a ground wire or something that I might have not hooked back up?
 

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It sounds like an airbox leak. I had a similar issue on my ZX9 when I forgot to hook up the ram air. Sounds like it's not getting enough air.
 

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once i lifted my cbr 929 tank and airbox and was able to joggle the throttle body positioning sensor and everything had to be resynced. acted the same way as yours is now. just a thought!

does it idle and accelerate smooth to 4,000. my cbr was real rough getting around there and wouldn't continue on.
 

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not an airbox leak, the bike will rev fine with the airbox lid off. do you have any FI lights on? im wondering if you left something dis connected. if the butterflies where not opening at all this would happen. this would set off the FI light. try propping the tank up and starting the bike with the airbox lid off so you can see what there doing.
 

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older firmware for the PC V has some error that will cause 1 injector to fun 100% all the time, it will cause a bog and sound more v-twin-ish. this can be fixed by being on the new firmware, they have had the fix for a while so if you already updated it chances this isnt it. V 1.3.0 I believe.
 
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