Hey guys i need some answers if this happened to anyone i tuned on speed density a while ago for my evo9 everything was working great until now. I drive consistantly on hwy my car just shuts off.. It seems like the fuel is cutting off. I use 255 walboro but i dont hear it so i bought a new one same thing.. I put direct power to it still makes low noise.. Im not sure if its the pump any suggestions what i should go with? Or pump relay i have 2.. Or tune... I sort of ruled out tune since speed density should only be givin me problems like cold start .. Any suggestions please