Unfortunately not. A few owners have tried in the past, but because the main computer (EV-ECU) needs to be changed, this also means that ALL other ECUs need to be changed with it as they are all VIN-encoded. If there is a VIN mismatch, the car won't start. So that rules out pulling parts from another car (although one total transplant has been done successfully).
If the car has the battery warming system (unlikely for a car originally sold down south), then it may be possible for it to be added relatively easy (the components necessary would be the release handle, a new EV-ECU with QC-enabled firmware (and the tool to flash the VIN), and the quick charge port itself. That is, if there aren't components missing from within the pack (the dealers are not allowed to open the pack. The battery pack is one part number from Mitsubishi and no components inside can be ordered).
Two different packs have been identified in the US. One has the cooling/warming system plumbing and exhaust fan, the other does not (dis-regarding the quiet cell upgrade in mid-2012). We still don't know if Mitsubishi would've went through the hassle of building three differently configured packs for the US (the third being warming system without the quick charge hardware) for the three differently configured cars that were available. This all went away with the 2014 model year, as ALL cars had the warming system and quick charge (simplifying production led to a $6,000 price drop).
Bottom line, so far, the only successful QC addition has been a total electrical transplant from a QC-enabled car to one without, plus the purchase and programming of a new airbag controller (the donor car was a wreck). If you go this route, be prepared to totally dismantle the car to do it, but please keep us posted if you do
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