have a micron system and pcII installed.Have just fitted a BMC filter will i have to alter any of the settings?The air box is stock(apart from the filter)Have disconnected the pair system by means of the vac pipe on throttle body no4 and blanked of the large air outlet(right hand side of air box)because i got fed up of the popping on over run.The other question if anyone can help is which wire can i disconnect from the mutiplug on the back of the insrument panel,so that the speedo stops working?I tried by disconnecting the speed sensor (which had the desired effect but just drunk the fuel)i can only assume that this sensor must have some other use .thanks for the help in advance.