Has anyone used the accelerator (sp) pump?
Ahh, the ol’ PCIII Accelerator Pump feature (here after AP). Another topic that has a full spectrum of experiences/opinions with no one agreed on result.
The AP has produced opinions from “it sucks, bike runs much worse” to “it does nothing I can detect except suck more gas” to my results of “big improvement with almost no gas mileage penalty”.
Armed with this valuable information
I suggest you install it, try it, modify the settings a bit and if not satisfied simply remove it. All at no cost and very little personal time used.
I came to the FJR from a motorcycle that produced neck snapping acceleration starting at 2.5k rpm. I found Feejer to be very weak in the knees until 6k rpm :angry2: so I was willing to give the AP a chance. I found enough of an improvement in low rpm acceleration (perceived improvement at least) to be able to live with Feejer.
The AP only works when the throttle is abruptly opened and only works for a very short time. For those that aren’t familiar with how it works here are the adjustables – The sensitivity of throttle movement under which the accelerator pump is activated; the amount of fuel to add; the number of engine revolutions during which fuel is added.
Settings may look like this:
90% Sensitivity
15% Fuel Increase
20 Engine Revolutions
I’m running 85% sensitivity; 17% fuel increase; 25 engine revolutions. I ride with either a full load (pillion) or a heavy hand and my gas mileage is in the 38 mpg range almost all the time. I’ve never seen better than 40.2 mpg even pre AP. I’ve never seen worse than 34.x mpg including New England Dragway evenings. When new, my mileage was in the 34 mpg range and since 2k miles it has been pretty consistent around 38 mpg with and without the AP.
Give it a try. If ya don’t like it, pull the plug.
