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Discussion Starter #1 (Edited)
What is the max PSI of BOOST I can run on a GXP stock fuel system with ID850 injectors ?

2300 TVS Maggie. Getting 5-6 PSI now.
 

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This is what I dislike about the Pulse Width Modulation of our stock system. Nominally runs 58 PSI. with no return line. With the old SC V6 you had a boost referenced
fuel pressure regulator and a 2 speed fuel pump that ran on a resistor to get low speed for non boost. How hard is it to Add a return line to our gas tank????
 

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Are you running gasoline or ethanol? I wouldn't even run a stock GXP fuel pump with 6 psi and gasoline. But that's me.

I run a stock fuel pump in my GXP, but it runs directly into a surge tank with twin 525 Walbros on an Aeromotive boost referenced system.
 
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