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Sb8 problem from 5000 to 7000

 
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biturbo



Joined: 22 Jan 2014
Posts: 18
Location: ITALY

PostPosted: Thu Jan 07, 2016 9:16 pm    Post subject: Sb8 problem from 5000 to 7000 Reply with quote

After installing the power commander in my sb8 the smoothness of operation improved a lot at low speeds and small openings of the throttle body but still remain a problem of regularity of operation from 5000 rpm to 7000 at big and fast openings. my mechanic at this point do not think would be a carburation problem but thought could be a problem with ignition ( coils or other) .
Could be an ecu problem ??
At high revs the engine in works well and is also very powerful now over 123 rwhp
Since many bikes seem to suffer from similar problem i would like to know if this problem is common or only my suffers ?
someone has solved ?
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wdm



Joined: 02 Sep 2012
Posts: 14
Location: Connecticut, USA

PostPosted: Sun Jan 10, 2016 8:15 pm    Post subject: Reply with quote

biturbo - could be your TPS. see:

http://www.bimotaforum.co.uk/viewtopic.php?t=3911&start=0&postdays=0&postorder=asc&highlight=
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biturbo



Joined: 22 Jan 2014
Posts: 18
Location: ITALY

PostPosted: Sun Jan 10, 2016 10:41 pm    Post subject: Reply with quote

Tkanks a lot !! i will try and i let you know if the situation will improve
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biturbo



Joined: 22 Jan 2014
Posts: 18
Location: ITALY

PostPosted: Sat Feb 06, 2016 4:55 pm    Post subject: Reply with quote

Problem solved !! Now the bike runs very good !

the temperature sensor in the radiator is ' placed in too Hight position so if the circuit is not completely full creates problems to the map
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SB8R Tuner



Joined: 29 Nov 2010
Posts: 83

PostPosted: Sat Feb 06, 2016 6:56 pm    Post subject: Reply with quote

That's funny, the temp sensor in the radiator is for the temp gauge in the dash. The temp sensor for the ECU is mounted in the thermostat housing under the airbox. I'd make sure you don't have any wires crossed up.
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biturbo



Joined: 22 Jan 2014
Posts: 18
Location: ITALY

PostPosted: Fri Mar 18, 2016 4:46 am    Post subject: Reply with quote

SB8R Tuner wrote:
That's funny, the temp sensor in the radiator is for the temp gauge in the dash. The temp sensor for the ECU is mounted in the thermostat housing under the airbox. I'd make sure you don't have any wires crossed up.


Yes infact the problem returned but now is finally solved the problem was the tps sensor.
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