Question about Yamaha Arlen Ness Jackpot Motorcycles
Great question and pretty much depends on who you ask? some say great some say bike becomes flat and boggy but I believe it depends on what riding you do (all low end or all top end flat out) also I believe it depends on how good condition the rest of the bike is in first place will affect the result
I have seen results from people checking lap times before and after disconnect and overwhelmingly the lap times were better if connected? But saying that some guys still preferred it disconnected some guys didn't and some noticed no change at all?
just undo the the plug see what you think its easy to connect back up if no good and won't really hurt anything to test My suggestion is if you notice no change or notice bad result then run with connected after all Mr Yamaha went to a lot of trouble to put it there !
Posted on May 26, 2011
Testimonial: "Thanks I apreciate your imput. I cant seem to find any one wyo can tell why it is on the bike in the first place. Other then it tells the CDI where i"
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Posted on Jan 02, 2017
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The accelerator pedal
The accelerator pedal position (APP) sensor 1
The APP sensor 2
The throttle body assembly includes the following components:
The throttle position (TP) sensor 1
The TP sensor 2
The throttle actuator motor
The throttle plate
The engine control module (ECM)
The ECM monitors the driver demand for acceleration with 2 APP sensors. The APP sensor 1 signal voltage range is from about 0.98-4.16 volts as the accelerator pedal is moved from the rest pedal position to the full pedal travel position. The APP sensor 2 range is from about 0.49-2.08 volts as the accelerator pedal is moved from the rest pedal position to the full pedal travel position. The ECM processes this information along with other sensor inputs to command the throttle plate to a certain position.
The throttle plate is controlled with a direct current motor called a throttle actuator control motor. The ECM can move this motor in the forward or reverse direction by controlling battery voltage and/or ground to 2 internal drivers. The throttle plate is held at a 7 percent rest position using a constant force return spring. This spring holds the throttle plate to the rest position when there is no current flowing to the actuator motor.
The ECM monitors the throttle plate angle with 2 TP sensors. The TP sensor 1 signal voltage range is from about 0.5-4.25 volts as the throttle plate is moved from 0 percent to wide open throttle (WOT). The TP sensor 2 voltage range is from about 4.45-0.7 volts as the throttle plate is moved from 0 percent to WOT.
The ECM performs diagnostics that monitor the voltage levels of both APP sensors, both TP sensors, and the throttle actuator control motor circuit. It also monitors the spring return rate of both return springs that are housed internal to the throttle body assembly. These diagnostics are performed at different times based on whether the engine is running, not running, or whether the ECM is currently in a throttle body relearn procedure.
Every ignition cycle, the ECM performs a quick throttle return spring test to make sure the throttle plate can return to the 7 percent rest position from the 0 percent position. This is to ensure that the throttle plate can be brought to the rest position in case of an actuator motor circuit failure. Observe, under cold conditions, the ECM commands the throttle plate to 7 percent with the ignition ON and the engine OFF to release any ice that may have formed on the throttle plate.
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