Hey guys. Does anyone have an idea why my cars engine management light (epc) is coming on when I go past 100mph? I've got a full Milltek turbo back on it, the light only comes on when I go past 100mph, I loose all boast and it doesn't seem to go any faster even though my foot is hard to the ground. When I switch the car off and on again the light goes off and it works fine, until I go past 100mph again....