need help with stack

[x MadMAX DIESEL]

even with the ppe pump in my sig, when ever i turn my quad above 90 hp, the truck gets slower like im running out of fuel. nothing i can do with the mp8 or boost controller fixes the problem. i just changed my fuel filter about 2 weeks ago, and my fuel pump is relavitilly new aswell. why does my truck fall flat on its face as soon as i turn it up?

 

[Turbo Buick 6]

even with the ppe pump in my sig, when ever i turn my quad above 90 hp, the truck gets slower like im running out of fuel. nothing i can do with the mp8 or boost controller fixes the problem. i just changed my fuel filter about 2 weeks ago, and my fuel pump is relavitilly new aswell. why does my truck fall flat on its face as soon as i turn it up?

I don't have an answer for you but I can tell you there can be problems when stacking. With what is available now a days there is no reason to stack as you are shooting in the dark and really don't know whats going on

 

[dmaxfireman]

you already have a lift pump so i think you should port both rail fittings and shim you relief valve. even without a lift pump it really woke up my truck.

 

[x MadMAX DIESEL]

you already have a lift pump so i think you should port both rail fittings and shim you relief valve. even without a lift pump it really woke up my truck.

i might have to try the ported fittings. ive already got 3 washers in the FPRV