Ok, Theres some misinformation being thrown around here guys. Firstly, Jam/Blitz etc ecus are not "self mapping". Secondly, they have the potential to run your injectors much further than the stock ecu does. They can cope with much higher boost pressures than 1.2 bar but sufficient larger injectors are needed for this. Often when running higher boost it is safer to run a mappable ecu with sufficient injectors. The Jam and Blitz Ecus I have run have fueled well for 1bar though. I'm running a hybrid at 1 bar, but sometimes it creeps to 1.1 on cold nights. This is about the limit of your stock injectors, any more boost and you'll be maxing the duty cycles of them out, leading to leaning, which you want to avoid like the plauge as it leads to a blown engine one way or the other. I would play it safe and run 1.1 bar at the absolute maximum, you will not see much more performance from 1.2 trust me and its much better to run a couple less horses with a safe tune than, have a cracked piston, blown piston rings etc.