hi, i have level 6 2wd cosworth management fitted to my frst (i know its not a cossy, but could you just treat it like one to give me some ideas please), for the first 60 seconds or so the idle is very unstable, sometimes stalling? after that it runs fine! it only happens when the engine is stone cold. also im unsure what type of idle valve i have, how can i tell/are they the same? as the complete throttle body i bought had a 4x4 tps (which iv'e changed to pf 01) also it has a new coolant sensor (blue one), any help or ideas would be super!