hey i havent posted in a while but i just recently went turbo on my single cam and i got a check engine light that i cant seem to figure out. whenever i search about it all i get is stuff about efs its code 13. atmospheric pressure sensor. i think it might have something to do with my manifold cus i got the skunk2 pro series and it came with a black sensor in the back that idk what its for. also my car cuts out after 5k. if anyone know something that might help me i would really appreciate it.thank.