if i have the idle screw set at 800rpm and 10 degrees ignition it cant compensate for the fans kicking in because there isnt enough air going in to create torque for the alternator no matter how much ignition i add below 800rpm. its rearly easy to stall when setup like this

i dont have a problem with the 3000rpm test plenty if ignition and sits at 1 lambda niceley

i have to have plenty of air going in then counteract it with some retard (-5 degrees) then the site below 800rpm have lots of advance so it stops the engine going below 800rpm and prevents stalling so it behaves like it has an idle control valve

it works verry well like this but i'm unsure if it will cause a fail on the mot test

i suppose i'l take it as it is and see what happens and leave a bottle of scotch on the seat with the testers name on it