just noticed my fuel pressure is dropping to 30 psi while cruising at 55 mph.if i accelerate it will climb a few lbs.It will increase with boost. I only noticed this because i got lots of knock at partial throttle .A few days earlier i was running 22psi of boost with NO knock. . If i go out now it will be 40 psi but will drop after i drive it awhile. This is a fuel pump from Full Throttle with less than 1000 miles on it.Also has hotwire on it. Any ideas?