I have an innovative unit. It's standalone as well. I put the oxygen bung on the exhaust header on the right which has the most room. I had to put it almost straight up or at a very slight angle vs straight (something like 15°) because there was so limited space with the engine and firewall in that location. The wire is running straight up the top of the engine, where I intend to run it through the firewall with the additional grommit I put in the side of the pedal housing. Everything so far is good.
I stil need and extension wire though. Will have to go to DIYAUTOTUNE for that. Those guys are actually pretty good and decent.
http://www.diyautotune.com/
As a note on warranty I will say this : warranty in the US really sucks. In the EU the manufacturers are forced by law to give at least 2 years...