Hi Martin, I’ll double check tomorrow but I think the idle speed lowered when it’s disconnected, the management is just the standard L6, I’ve got a different throttle body with a tps still fitted which I’m gonna change tomorrow because when I tried to remove the iscv one of the screw heads snapped, i saw the engine it came off and it was running fine, admittedly it was about a year ago, I realise that the tps will probably need resetting but will hopefully give me an idea whether the old one is at fault,
someone said it could be the phase sensor but not sure that would cause the severe flat spot,
many thanks
John