2 Attachment(s)
Larger cube FPCM settings
To get my FPCM to not dial my stock pumps back when my aux pump kicks in, this is what I've done to my FPCM settings. FYI, this is a 7.0L CTS-V with an LSA 1.9L blower making 12PSI. Stock in tank pumps and a DSX Aux pump module. E-85 and ID 1300X injectors.
Notice the High Flow tables. These tables tell the FPCM to bring down the fuel pump duty cycle if a certain pressure is reached. If you have an aux pump kit, you more than likely need to increase these (reference attachment) to keep your FPCM from dialing back your fuel pumps under WOT.
Just wanting to share.....tired of seeing people hack up their aux pump kits and running lean under WOT.