Did the serial-to-USB cable you had for this work/communicate well? I know (from experience) that some serial chipsets are incompatible.
I am not sure on that.
Didn't realize some cables may not be compatible.
Good info for someone interested in purchasing.
I bought the cable thinking I would try to find a map for my bike.
However, after I started digging into the details (first bike in 18 years and new to fuel injection) I decided to go a different route.
My laptop is a Mac and needed to borrow my in-laws computer to use software, etc.
I decided to buy the PC3-USB unit and returned the cable before investing any time/energy in this unit.
As a side note-plug. If anyone is looking for a map for a PCIII-USB or PC-V, and can't find one they like and want a cheaper alternative than paying for Dyno time/custom map, this is a great alternative.
$75 for a map (based on mods, elevation and temperature), accelerator pump settings and detailed instructions on how to calibrate the throttle.
Jeffo was extremely helpful from start to finish. Great customer service, takes the time to call you and have phone conversations. Really great guy, can't ride anymore due to hip surgery, but says he lives vicariously through his customers.
And while I am new to this, I can tell/feel how good this map is.
I rode with the old PC3, with the old PC3 fueling manually adjusted way up, the PC3USB with a stock map, and then with the Jeffo map. It is a completely different ride now.
Throttle now is extremely smooth and responsive, including deceleration.