Airstrip Attack. Weistec CLS63 (650HP) vs. C63 P31 AMG (550HP)vs. Camera Plane by shift-s3ctor | Apr 9, 2013 | Videos | 0 comments CLS63: Downpipes, Exhaust, + Weistec Tune (650hp)C63 P31: Longtubes, No cats, Kleeman Tune Related Submit a Comment Cancel replyYour email address will not be published.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. Δ