Yeah I've mixed up a 50/50 blend yesterday and running it in the car now. I managed to do a little road testing with just water injection to gauge any improvements in intake temps. Had a mate riding shotgun monitoring the intake temps with the Xcal3 and watching the water/meth controller as I varied throttle input. Ambient temp was 25deg and at 110kph I had a consistant 43deg intake temp for a 15min duration of cruise. With the pump connected and a WOT application we witnessed the intake temps drop from 43 to around 41deg. Followed by disconnecting the pump and doing the same, we also saw a drop of 2 deg during the WOT. Sooo, much to my surprise I could not say from monitoring the intake temps via OBD that the water being injected lowered intake temps. In saying this I'd expect there would be a benefit in the combustion chamber with the water being injected. Only way to prove this would be on the dyno. Benny.