Itjust revs on and holds the same lower pressure. I tried it in today again to see if it would work again but alas no good. The second time i took it out i broke two of the pins stoopid cont i am but i soldered two back on but as these were on the closed loop part im curious as to know is the chip still useful. James i will need the lower closed loop part again as even though i soldered them back on it is mickey mouse tbh. Thank you very much james for the offer of looking at it. I will send it on to you on the chip and if you let me know how much i owe you for it i will send it with the chip.