I've found viper hasn't done anything - i may not have it configured right though. Poweramp sounds better than native music app. but poweramp is no good for listening to DAB/FM, spotify, movies, etc. Ah yeah, my ELM327 dongle works well with Torque Pro too. Can connect to both ELM327 and my phone via bluetooth at the same time which is handy. Not tried a line converter yet - haven't decided which one is best - since my HU already came with a bose loom so m 4 x speaker outputs are already phono - so think i'll need the PAC SNI35. Camera is this:- http://www.ebay.co.uk/itm/USB-2-0-F...-DVR-Camera-720P-HD-for-Android-/231807723281 The picture quality is good enough, but it seems to struggle when the sky is bright, it makes everything else look dark. will probably upgrade in the future but does me for now. The head unit picked it up with no setup needed, and as long as it was recording when you turn the car off it will automatically start recording again next time.