Todd's ETV 1000 Caponord Page

Mad Props to Ken's Falco Page!

Aprilia Caponord and TuneBoy

Ask anyone, they'll tell you--I'm a toyboy. I like buying things, and having just the right tool. TuneBoy is that tool.

Wayne McDonald wrote the TuneBoy and TuneEdit software, which allows both examination and modification of the Sagem ECU that Caponord's use. The software runs on a PC, and attaches to the bike via the connector under the driver seat along the left rail. TuneEdit is the companion software that allows you to change the mappings for the fuel injection, while TuneBoy handles all the other runtime settings. TuneBoy combined with the Gunson Digital Gastester exhaust gas analyzer allows you the bike owner to accurately set the CO level as part of your tuning.

When I first connected TuneBoy (on my laptop) to my Capo, I had a little trouble. Although I was connected the way the TuneBoy manual told me to, it didn't see the ECU. Wayne was fantastic, he emailed me fixes right away. After confirming with Wayne, it seems like my ECU may have been swapped out before I bought my bike (I bought it new). Usually, the ECU is loaded with the VIN of the bike, and set up to provide at least good, if not optimal, running. My ECU had no VIN, and the off-idle trim was 0; when I blipped the throttle, the bike would sort of rumble up, a kind of rough staccato rise. TuneBoy allowed me to set the off-idle fuel trim for a much smoother rise.

Yet another slam on my dealer. They obviously have never connected to the ECU on my bike, even though I've brought it in both for scheduled maintenance and with complaints about rough running and stalling. Wayne immediately spotted that an off-idle trim of 0 would give poor running, and there are fields for the last dealer code and last service date, which also were never filled in. Wayne suggested filling those fields with oil change date. If you have multiple bikes, that would really be a help

TuneBoy originated with Wayne's interest in Triumphs. Wayne seems to be a presence on a site for Triumphs. They have both a place to swap TuneEdit tunes, and a discussion forum for TuneBoy/TuneEdit where Wayne posts TuneBoy news and tips.


Hey, remember, we're all buddies, right? I'm telling you what I did to my bike, you're telling me what you did to yours. If you mess up yourself or your bike, well, I'm sorry, but I wasn't twisting your arm. Of course, Aprilia has trademarked their name and logo, and they don't know me from Adam.

Feel free to contact me: todd at caporider dot com You can always go home again