hallman pro better than pro rx? WHY?

[turbo98eclipse]

well i was reading up on these mbc's and was going to go with the hallman pro rx series, until i looked at this... http://www.boostcontroller.com/display_page.php?i=18 it says that the pro can go 30+psi but the pro rx can only adjust 5psi more or less than stock...im going to get an evo III within 2-3 months and will want to run around 21psi which is like 11+ than stock. my question is... why is the pro so "under powered"? is it because of the ceramic ball or what?

[daveyfx]

You more or less answered your own question without realizing it

The RX model, with the ceramic ball, is designed to be more sensitive than the steel ball unit. The RX is ideal for turning the boost up just a few psi over the stock settings whereas the basic Pro kit is designed for more drastic adjustments in boost setting. An example of where the Pro RX kit is more ideal is with EVO owners that look to run just a few pounds of boost on top.

I have the Hallman Pro (non RX) controller myself and absolutely love it. You will too.

[turbo98eclipse]

thanx for the reply! hopefully ill have it by the end of the week!

[Burtismaximus]

i bought the pro rx for my talon and it came witha different ball and spring, but the ceramic was installed. Directions sayed it was for 5 pounds over stock boost but the (im assuming steel ball) and spring will let me go much more than that. It doesnt give an exact number though so i really couldnt tell you. But what i can tell you is that with the ceramic ball it wont run any higher than 22psi on my car.