Was you at BHP by any chance?
AEM recommend to only use 50/50 mixture.
Revo is just allows you to alter the the map by up the timing. I can run timing 7 where before i can only run 5. Def feel more of a kick but nothing to boast about. But for £300 its def a good mod, keeps engine temps low especially on those track days.
This is what me and my mate did, Under the passengers arch with the pump. Easy to top up
Cables go through the bulkhead and straight behind the glovesbox, from there you can wire your controller where ever you want to.
Longest part is the throttle body removal, very tight on the back bolts. Easy option is to get the revo pipe.