Which Hallman MBC is better if I want to run about 22 psi on an EVO VIII? Any advantage of using a Hallman Pro RX (the one with the ceramic ball) vs. the Hallman Pro (the one with the steel ball). I guess that with the Hallman Pro RX I will need to use the stronger spring included so the only real difference is the ball material.

I am not interested in changing the boost once set and tuned so I am not really looking into the Hallman evolution kits that let you change boost from the inside of the car.

 

Just get an ES and call it done. If you're not changing it all the time there is really no need for a fancy MBC. Just something that gets the job done.

I have an ES and it works GREAT!