2008 G8 fuel pressure issues

[Swayc09]

I installed a zl1 pump with the vaproworx mexhnical kit and the new fpr. Now when i go wot the pressure gets to 10psi at about 5300 rpms. I added a kenne bell bap to the sustem and it helped the fuel not drop as quick but still gets there. Any idea where to go from here? Mods are - cam, headers, lsa on 8 lbs and on 91

[Firechicken5.3]

I have about the same setup and the same problem. Aeromotive 325 pump in stock basket. The boost a pump should be helping with the pressure fall off. It?s not uncommon to lose a little pressure but 10 is boarder line

[Swayc09]

Yeah i dont know what is happening.... it leans out bad.

[gmonde]

so are you loosing 10 psi or is it dropping to psi?

[wa04compg]

Yeah my G8 with LSA fuel pressure drops in boost and is worse at redline. I have a AEM 320 and will be upgrading it to ctsv dual pump with vaporworx

[Tre-Cool]

I installed a zl1 pump with the vaproworx mexhnical kit and the new fpr. Now when i go wot the pressure gets to 10psi at about 5300 rpms. I added a kenne bell bap to the sustem and it helped the fuel not drop as quick but still gets there. Any idea where to go from here? Mods are - cam, headers, lsa on 8 lbs and on 91

had a friend fit one these different fpr on the pump, his would still drop pressure even with the bap on a n/a motor of all things. put a stock reg back on the pump. problem solved, so i got no idea what shit they were selling as part of that kit.