Not sure if you made a decision yet or found someone to install the remote start. I have one for my 2011 ECO 6MT, there was only one shop near me that would install it, I have used them before for radio and other work and trusted them. Most places will not because of insurance restrictions due to the fact that if the bypass fails the car can start to move if left in gear.
To after it is installed properly, there is a series of steps you need to follow in order for the starter to work. With the car parked and running need to step on brake an shift to neutral then apply parking brake, turn key off and engine will continue to run, exit car and shut door, after about 30 seconds car will shut off and doors will lock. to start hit the key fob. should start if everything was done correctly, but if you did not pre set your car you will not be able to use the remote starter. It takes sometime to get the sequence down, and sometimes it gets fussy with the setting of the brakes.
I love remote starts but do not think I would get one for another manual trans again