rapidcossie alan has tested my cooler last year for the pressure drop and it was 6psi or thereabouts,he's says with a more efficient coller(either theres or rs500) then i would see more boost top end as it wont lose as much

SafeChav no 5th injector,ava dont believe in them,ive had my metering head modded and runnin 2 pumps,fuel isnt the issue,it could hold 19-20psi top end but then the mid peaks to high

fiecos dan and rick cheers for the input,ill look into it