A mate of mine uses a megasquirt v2.2 or 3 not sure but for the price its a pretty amazing bit of kit, got nearly every feature you could possibly want or need (some features cost extra) is customisable to different types of sensors and ignition types, has an app for andriod for monitoring different readings that you dont have gauges for or data logging wirelessly And when he got it it was less than £400 and the interface was easy enough for a couple of different tuners to look at and work with it in minutes. The software comes with it and theres a forum dedicated to it as it is essentially a self build ecu if you want to save extra £££ But some companies will just refuse to even try it