Kiggly HLA. Description from the website-
* 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 DSM Style Valve Cover Only at $150.
* While Supplies Last!