So I am reading this thread, and do not see where the question was answered, "How much more of a difference can the J-hook make in psi build up?

I have never seen over 23lbs on mine pulling a hill in low gear at 2600RPM

 

On my HY with a programmer and a j hook. I can hit 27 psi. It gave me about 6 more psi.

 

Thanks Tbirdz for the info, I guess the existing turbo is sufficient if you can gain 27lbs. I'll try it with my Edge EZ tuner.. Air Dog 150 should help with the volume issues.