I just put the b20 pulley on an b18b w/jrsc +boltons. Well after the pulley was installed I recieved 3, 5, 18, 43. I checked them 3,5 are for MAP sensor not sure what the problem can be their. 18 doesnt seem to exist, and 43 is problem w/ fuel delivery not sure if that has to do w/ the jrsc fp regulator. only boosting about 7psi due to the altitude. Any ideas. Thanks

 

ttt