fuel pressure help

[geogolf]

hey guys is there any way to get a little more fuel pres. i put on a set of slp runners, and did some porting work car [90 l98] does not want to run over 5200 rpm before it would go to 5500/5700 no prob. is it getting to much air /not enough fuel, is there a way to increase pres. on stock setup, or will i have to buy a adj. reg. or could there be something else wrong. went over intake and plenum with starting fluid no vacuum leaks any help is greatly appr.

 

[speedmaster4]

you can ''shim'' the srping in the oem fpr but its a time consuming trial-and-error deal...or get higher flow rate injectors from a 94-96 buick roadmaster or lt 1 caprice at j-y (their a better unit than 90/l98 oem anyway

i assume you've already checked fuel pressure isn't falling off at 5200 under actual load condition