I am having a major problem. My fuel pressure is 40 psi at idle but when i get on it the psi only rises to 55-60 psi under boost and the motor runs extremly lean. I Have a brand new fuel filter and pump. Heres my setup.

D16a6 with darton flange sleeves
scat rods
JE pistons 8.3-1 compression
ported and polished ports and chambers
swirl polish valves
isky springs
crane cam Duration intake:232 Exhaust: 234
Jrsc with boost upgrade 10-11 psi
Short ram intake
AEM fuel rail
stosk injectors
Airmass header
2.5" exhaust with apexi N1
Intank walbro pump
Fuel psi gauge coming off of rail

 

you know, the FMU that comes with the jrsc is adjustable.

 

yea ive tried that im not retarded