Greetings,
Welcome to the forum.
I don't have a crystal ball to magically tell you what is wrong, so here are some questions:
If you turn off the A/C, does it run better up hill?
How bad is it going up hill, just slow, or hesitating/stumbling/bucking?
How is the acceleration on level (flat) roads?
When is the last time you did a tune-up on the Sporty (plugs/wires/oil change & filter/air filter/fuel filter?)
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Need more info for any of us to help - and if the check engine light (CEL) is on, posting those codes will help us help you..
Regards,
GottaCruise