Right, been playing today and with your help Christian I think I've got it sussed. I reset the unit so it went back to original settings, with all the gear-based stuff off. I Turned the duty cycle right down to its lowest, 20% I think it was and set the target boost to 0.5 kg/cm2. I upped the duty cycle until it hit the boost limit set. I gradually upped the boost and carried out the same process until i reached 1.35kg/cm2 or just over 19psi. Once I was happy that the boost was not peaking past 19psi I turned on the gear stuff and set up the speeds. I then turned on the gear learning and started to check the boost through the gears. I found that in the higher gears boost was dropping back to around 1bar so played with the feedback settings. I havent quite finished yet but was finding it difficult to keep an eye on the boost while flooring it in 4th & 5th, too many sunday drivers and horses on the roads I will say that on my uphill stretch of private test track I can now hit 120+ whereas before I was lucky to get to 110-115!

Thanks for taking the time to help Christian, much appreciated. The manual says how to do stuff but doesnt explain why