Airstrip Attack: Weistec Stage 3 Supercharged C63 Black Series vs ESS 725 Supercharged E92 M3 by shift-s3ctor | Apr 9, 2013 | Videos | 0 comments C63 BS: Weistec Supercharger Kit E92 M3: ESS 725 Kit and built motor. Related Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Notify me of follow-up comments by email. Notify me of new posts by email.