Also Is it something funky with my truck or is it normal to kinda hesitate right around 2500 rpm when you puch it? I assume its the blower starting to boost?

 

Mine doesn't ever hesitate. I doubt that it's normal.

 

I am having a similiar issue with my TPI stealth ram, twin turbo setup. stock lines, holley in-tank 255, aftermarket FPR, 72#ers.

cold idle, i get 55-60psi, warm i get around 45psi, but just like Ken reports, my fuel pressure drops to around 20psi over 5000rpm, and leans to 14:1. My fab guy explains the solution is to put in a fuel cell w/ pickup and go with external fuel pump, and swap out the stock fuel lines from tank to rail with braided stainless. I have a Accel DFI, so i can run 12.75:1 at light loads, and rich it up to 11.8:1 for heavy loads.

 

See that's my problem but I am running two pumps capable of supporting 700 horse yet I still run lean??? And I have a hesitation at 2000 that apparently isn't normal.

 

who tuned it?

 

So, did you fix the oring and still have the lean and hesitation problem

 

Tim Kelley with superior racing and xact dyno tuned it. He seemed very knowledgeable. As far as running lean i havn't hooked up a fuel pressure guage or wideband yet. The oring just solved my hard starts. The hesitation or bog is right around 1500-2000 and happens at random. Sometimes it runs like a stripped ape and others it bogs down.