I have a 2106 Holden Commodore SS LS3 6.2 with a Magnuson Heartbeat 2300, running 90 mm pulley 7 psi, fuel pressure is dropping to 330kpa in the higher rev ranges but it should be 400kpa , is the fpcm fuel flow rate value right or do i need to increase that or do i need a fuel pump booster?
Please find attached files