Hi guys, I installed this kit in my FR-S this weekend, and I thought I'd share some notes.
First of all, many thanks to Chaetagnath for the DIY, it was very helpful.
Its possible that I'm the first in Canada to have this done, since EasyGo (selling via Amazon.com) doesn't ship to Canada. I contacted EasyGo about this, and they said they will be selling via Amazon.ca "soon", but I didn't want to wait so instead I used a service called Kinek.com. Basically you have your package shipped to a location just across the border (in the US, Lewiston NY in my case, but they have a whole bunch of locations) and then you drive down and pick it up. Cost me $10 plus the gas to get there and back. Of course, this only works if you live within a "reasonable" distance of the border, which I do (about 1.5 hours). Plus I'm still breaking in the engine so I'm happy to put some KMs on.
I started about 10am on Saturday, went till about 9:30pm, and then spent about another 4 hours Sunday afternoon. I think it would have been twice as fast if I'd had someone helping me. As I was I constantly had to stop what I was doing to go back and refer to the DIY pictures and other documentation. But nothing about it was really hard. Well, aside from running the wire from the door to cabin, as has already been mentioned. That was really a bitch.
Also, I wasted a good two hours on a really stupid thing. Turns out the brain will refuse to lock the doors via the keyfob if the door is open, and since you are working on the drivers side you probably have the door open. Unlock works, lock doesn't. I thought I had a wiring problem. Even worse, on Sunday when I was finishing up I couldn't get the locks to work again, even with the door closed! The "door open" light on the dash stayed on even with both doors closed. I was freaking out, I thought I had fried something. Turns out the car considers the trunk to be a "door", and I had the trunk open. Closed the trunk and everything started working.
I used T-taps for the wiring and was pretty happy with how they worked. But it is cramped down there.
When shopping for the Scytek Inverter, be aware Scytek also has a similar device called the DLRM. I ordered this by mistake, because it said "Inverter" in the description of the product and it looks really similar (slightly bigger, a couple extra wires). I had trouble getting the locks to work on Saturday because of this, and I thought I was screwed. But I did some research Sunday morning and it turns out you can wire this thing to be a an inverter so I was ok. But just buy the right thing and you won't have to worry about it.
Related to this, I bought the fuse tap as suggested to power the inverter, but I bought the wrong one (I needed a *mini* fuse tap). So instead I just put a t-tap on the 12V line of the ignition harness, problem solved. I kinda prefer this anyways because I can put the lid back on the fuse box.
As with the other guys, the remote start doesn't work (starts, runs for 3 seconds, stops) and the trunk release doesn't work. I contacted EasyGo today and they are going to send me a new brain. I was hoping the box I was sent would already have the brain with the "fix" but no such luck.
Installing the door handle was pretty easy (except for the wire as mentioned above), and the paint matches perfectly (Firestorm Red), in case anyone was worried about that. As for running the wire I ended up using a unbent metal clothes hanger, with the wire taped to it to fish it through the rubber piece. I think it would be much easier to do if you just took the door completely off, but I don't know how hard that would be.
Installing the button itself was the easiest part. Contrary to the instructions I found I didn't have to remove the center console. I just popped off the trim on the right side and reached up inside and pushed out the USB connector (as described) and the just pulled out the panel out. The new panel with the button then just popped back in. Then just fish the button wire out the left side. Took 5 minutes.
I used option A for the steering wheel lock, which worked great, except that the cover won't go on because the key is in the way ( the cover has a stem which is supposed to slide into the cylinder where the key is supposed to go). So I'm not sure what I'm going to do about that. I might look at option C, or maybe cut the stem off and glue the thing on somehow.
It was a little pricey (I figure it'll be $750-$800 by the time I'm done), but I'm super happy with it. I grin every time I push that button and the engine fires up.