I am curious to know what is involved in the ECU upgrade. I am pretty sure I can replace the hose myself, but upgrading the ECU may be over my head. Or maybe once riding season is over, I can take the bike apart as a winter project and attempt it.
ECU Upgrades are pretty simple - well, unless your Spyder is a 2013 RT V-Twin! In which case getting the ECU off is a bit of a marathon!!

IIRC, your 2011's ECU is nowhere near so hard to find &/or remove, but it's been a while since I looked at one of them...
Basically, you find & talk to an upgrade provider/ECU Tuner, someone like
Monster or
Wick-it over your way, or
ECU Xtreme/RotaxRacing on this side of the World, to describe your riding needs and wants and discuss what your upgrade should entail; then you remove your ECU & send it to them Priority Package with Insurance & wait a few days, maybe a week or so; once it comes back, you plug it back in, put all the tupperware back on, and start up the bike; if you can, let the bike idle for a few minutes (maybe 10-15 or so) then gently rev it up & down a bit, but if you can't it doesn't matter, it'll learn as you ride, it just takes a little longer for the improvements to reveal themselves; then you go for a ride, and rapidly become aware of how much the OEM/factory tune restricted your bike's capability, plus maybe spending some time kicking yourself repeatedly for not doing this earlier!!

hyea:
The factory tune really throttles these engines back
A LOT, and an ECU Upgrade can unleash as much of that extra capability as you want, all the while staying within the reliability and longevity limits/capabilities of the engine & driveline as tested and proven on other platforms running the same gear. I've not only got
MUCH better power output, but if I'm simply cruising &/or riding at anything much less than the new limits of the machine, I get better fuel economy too, basically the same as most 1330's, altho my range is still less than theirs, albeit restricted only due to the smaller tank we get on the V-twins. AFAI Can See, that means Wins all round, and it's pretty simple to do too, but it does mean a week or so of not riding!
Go on, Do It! You Know you want to!
Ps: If it looks like it might fit, you might want to see if that ...400 Part# is still available over your way... :dontknow: