hello all. i have recently purchased a superchips bluefin for my focus 2.0 ghia (03 plate) i went through the procedure to install it with no problems, untill a few days after. my car has a milltek 4 branch manifold on so the engine management light was on. the bluefin turned the light off and it seemed to pick up alot faster but the light come back on and seems to go back to how it was before. when i was driving, the light come on and the car stalled which is why i think it goes back to being slower. any ideas??
sorry if it doesnt make sense ive jut got in from work