I ordered 2 of these on accident. The one im selling is brand new in unopened hks packaging. This is a great solution for all of us CA people that have problems with atmospheric bov's. It basically stabilizes the idle after the bov vent to prevent stalling. They can also be used on rb20's and sr20's.
Heres some more info:
The HKS EIDS has been developed to buffer dramatic airflow meter signal fluctuations. By buffering these fluctuations the EIDS prevents engine stalling or stumbling associated with sudden imbalances in air/fuel ratio of airflow meter-equipped vehicles that utilize atmosphere venting blow-off valves.
$130 shipped.
