I need to lower my fuel pressure with my AEM fuel pressure regulator. My B&M fuel pressure guage is reading about 52psi right now, and I was told to lower it to 35-40. How do I do that? Thanks. BTW, does the fact that I have 9.1 compression pistons mean anything when setting the fuel pressure? Thanks

 

Loosen nut....turn allen screw counter clockwise....then tighten the nut down after you are at your desired fuel pressure.

 

I heard something about pulling the vacuum line?

 

Anyone?

 

Yes...do it with the vacuum line pulled.