Provides the best of both worlds: internal recirculation for performance while venting to give the signature BOV sound every time you lift off the throttle.
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Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Upgrade To Dinan's Experience Package to Save When Modifying Your F90 M5!
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.
