Pros: relatively easy install. +++75 MPG
Cons: poor documentation. nonexistent instructions
Was a pretty easy install. Have had confusing things happen which are not documented. Also having BMS (Battery Management System) issues, which may now be cleared up. Basicly the documentation is not really great. I had to piece together information from the supplied video, the "install document" and on-line user information. (Prius chat...)
For example, no document mentions anything about the EV mode wire. (and the fact that EV mode is included in the switch - you don't need to buy a separate EV switch) I just think someone needs to take an overall look at the product and write it up properly - in English:) no offense to anyone...
My install still has some finishing pieces to be done but it should be easy to finish up
Otherwise i am happy with 75 MPG or more in blended mode. I sure do wish EV mode was fixed and didn't "pop-out" when going up the smallest little hill. (So I learned that EV mode isn't at all useful for my 7 mile gentle-rolling-hill commute to the office :( Bit of a bummer because the promise of using NO GAS is not a reality, (for my case). I am happy with 50% better mileage however.
Planning on charging every other day (with my 40 my blended mode range) unless I bike to work.
BMS recording of SOC (& other data) into the XLS on the SD card is nice for Excel-obsessed plotting people like me :) I give it a B+ or A- so far but it has only been 3 weeks....