What is the 19c rated at compared to the big16G? which one of these turbos would i benefit more with running it with a mpi and supporting engine mods?

****HEADING IS INCORRECT-THIS IS A 1988 DONT KNOW HOW TO CHANGE HEADING**** Hard to find that were made from 1987 - 1989, American Sports Car. 31,319 miles stock no modifications on this vehicle Asking $8,500. obo   Exterior: Beautiful white color and slick, chrome factory rims, dual outside mirrors, pop up headlights, rear window defrost, glass looks great, rubber looks great, original rear end. Eye catcher!   Interior: maroon leather interior, bucket seats, tilt wheel, dual power mirrors, pow

New injectors were running choppy with the stock fpr holding 37psi. I put on my stedibani adjustable fpr and set it at 43. Smooth now holds perfect but as soon as you shut the car off it goes right to zero. Aren't they suppose to hold pressure for a certain amount of time? Any info would be great. Car pulls strong to 5k. Installed new injector clips and resoldered a bunch of connections

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