Hks bov do I need a tune or remap to run it safely??
 

Hi guys as the title says really I want to fit a hks bov from sumo power also with a do-luck panel filter will I need to have the car tuned or remapped to runs these parts??? Cheers

Panel filter is fine. The HKS bov can be marginal on Imprezas, due to the fitment of a mass air flow sensor, and the resulting stalling/hesitation that can follow from dodgy dump valves. There is adjustment on the bov, and if you insist on fitting one, be prepared to adjust it! (Tighten the spring).