ok im getting a code 12. thats rpm signal (crank angle pulse) what the heck does that mean exactly??? is it my cps? would this cause the car to miss at all? it has a small miss in it at idle. also what is the easiest way to fix this. car is running about 9psi. only mods are 60 trim ct-26 mhg arp's 3in. dp and stg 2 clutch and an mbc other than that its stock.
