HLA Pressure Regulator

* Actively Regulates Lash Adjuster Supply Pressure to a Constant 15psi.

* Accomplishes this by Restricting Flow Instead of Dumping Extra Pressure like the JDM Regulator.

* Reduces Oil Flow Into the Head, Keeps More Oil in the Pan.

* In Some Instances can Greatly Improve Oil Pressure at the End of a 1/4mi Pass. See Results from the Kiggly Racing Drag Car

* Air Bleed at the Highest Point Helps Oil Quality and Aeration to Lash Adjusters.

* Fits all 4G63 Including DSM and EVO 8/9