I finally got a fuel pressure guage mounted, ended up putting it on the fuel filter. At idle the fuel pressure stays at 40 psi, when you rev it up it jumps to 42 psi then drops and stays at 38 psi. Also, tested it at load with parking brake on and pushing the brake, I gave it gas and a bit of clutch to simulate driving while problem was occuring. While bogging down the psi went down to 32psi.
Does any of this sound like a fuel pressure problem?
Im wondering if maybe the lean condition is caused by larger then stock exhaust, no cat and one side of exhaust off cobra, And AFM from supra and intake airbox from cobra.
Im kinda of running out of ideas on this thing.