Main Motorcycle: Bonneville SE
Join Date: May 2012
Location: The Caves
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Am i a bit dim? showed the bullet conectors on resistor,on bike, but were do you plug them into
The problem with the EFI models is that complete removal involves deleting the solenoid. This is a computer-controlled electro-magnetic valve that opens and closes the air flow to the system.
Because AI is an emissions item the makers are required by law to have a means of detecting when this solenoid is faulty or has been removed and this turns the engine check light ON.
To avoid this the solenoid can either be replaced by a resistor which acts as a dummy load fooling the computer into thinking the valve is still there, or use software such as TuneECU to turn off the warning lamp facility.
The easiest thing to do to avoid electrical complications is to remove the entire system but leave the solenoid in place. It only weighs a few grams and will continue to click on and off uselessly for ever keeping the computer happy.
I've already installed a resistor, so it's all moot for me, but if one were to leave the solenoid in place, would it be necessary to plug the ports of the solenoid?
BTW, I've not checked, but does the resistor generate any heat? Is this a concern?
No, no need to plug the solenoid ports.
The heat disipated in the resistor depends on the value chosen. A 47 Ohm resistor would draw 0.25 amps and disipate 3 watts.
If you fitted a 3 watt resistor it would get hot, yes, being as it would be working at maximum power rating. If you use an oversized resistor, 10 watts for example, those 3 watts would be spread over a much larger surface area and it would just feel warm.
More about different value resistors on this post:
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