You have it backwards. When the Spyder is NOT in ECO mode the ECM runs the engine with full power and torque throughout the designed RPM operating range the engineers built into the engine. When the Spyder is in ECO mode the ECM reduces the acceleration curve of the engine; you can call it Old Lady Mode. No offense intended to those who like ECO mode; I call it No Fun Mode. There is NO change in gearing in or out of ECO mode. See the picture below.
Yep, as other's have said, I agree that there's absolutely
NO gearing changes associated with ECO Mode, it's pretty much all in the throttle!

pps: And ignoring the dinky green arrows as nothing much more than an unnecessary reminder & basically cosmetic frippery to take your attention off the road & surrounding traffic etc, I don't think it's actually the
ECU reducing the POWER & TORQUE that's driven by ECO Mode per se, it's more that selecting ECO Mode is effectively the flip side of installing a Pedal Commander :lecturef_smilie:
Adding a Pedal Commander intercepts the throttle signal and
increases the rate at which your throttle input is applied to control the ECU & so extract power from the engine; while BRP/CanAm's version means that selecting ECO Mode simply intercepts the 'normal' throttle signal and
decreases the rate at which your throttle input is applied to the ECU as per that Graph!

. A Pedal Commander
INCREASES the % throttle opening for any given degree of twist; while BRP's ECO Mode
DECREASES the % throttle opening for the same given degree of twist! :shocked:
Which as far as I can see means that quite simply, no matter how hard you wring it, the throttle signal is going to be reduced/delayed so you can't ever get the ECU to deliver as much fuel to the engine for any given throttle setting; and that, if teamed with a little 'short shifting' (but not by much

) in response to prompts from the dinky green light instead of the operator learning to shift at/near peak torque, just
might even lead to your Spyder using a tiny amount less fuel in the long run - but that fuel saving comes at the cost of marginally less response being available all the time, slower acceleration, and getting into those higher gears sooner... which in itself juuust might increase the stresses on other parts of the driveline!! :banghead:
Or if you like, when your Spyder's
NOT in ECO Mode, the throttle input is
NOT delayed/restricted (much!

); but when it
IS in ECO Mode, the throttle input
IS delayed/restricted as per the graph, so your engine is not ever going to see the same responsiveness &/or power/torque output from the same throttle setting - it's all going to be proportionally less as per the graph and you'll never get the 'normal' WOT that you get without ECO Mode selected.... Not that the WOT you get 'normally' really
IS WOT anyway, cos it too is somewhat restricted due to the de-tuning our Spyders get courtesy of BRP's lack of confidence in our skills & ability to control such astonishing amounts of power....
Funnily enough, many of us who've had ECU Upgrades done; upgrades which for most
IMPROVE the ECU's performance mapping &
INCREASE the engine's power output at a given throttle setting, and for some even increase the WOT setting & broaden the rev range where this occurs; have found that when we're not wringing the throttle hard & thrashing our Spyders to the extreme, we
consistently get measurably better fuel economy because of the better/earlier throttle response & greater access to power that means we can pull & hold higher gears more easily
without stressing the driveline.... which to me seems to be the aim, but effectively be the opposite of what BRP is achieving with their ECO Mode!! :gaah:
Still, all that ^^ palaver is just
one of the reasons that I still own and I'm still ryding by preference my peppy, revvy, & exciting to ryde V-twin powered 2013 RT that doesn't have any of that ECO Mode clap-trap!!
MY ECO Mode comes courtesy of how gently I twist my right wrist, and I don't need any dinky green arrows to remind me to short shift if I'm trying to eke the most miles from as little gas used as I can! But that's just me I guess! :roflblack:
I've said it before, but I'll still say it again - I like to
Ryde More, & Worry Less! 
hyea: . :yes: