Dinan Free Flow Exhaust with Polished Tips for BMW 550i (N63TU) F10

Dinan's Free Flow Exhaust improves exhaust flow by reducing back pressure, resulting in increased power output and a great sporty sound that is civilized when you want it to be and pleasantly aggressive under harder acceleration with zero drone. 100% stainless steel construction and exacting specifications ensure that the system fits correctly using the factory hangers and will resist corrosion for years to come. An vacuum controlled butterfly valve is utilized to improve flow at wide open throttle while keeping things civilized and "drone" free throughout. The design reduces overall weight as well and features 3.5'' polished tips for a tasteful high performance look.

Benefits of the Dinan Free Flow Exhaust for the F10 550i:

+ Sportier sound
+ 100% 304 stainless steel construction
+ Bolt-on installation
+ Four 3.5” stainless steel polished & laser engraved exhaust tips
+ Add 10 Horsepower when used in conjunction with the Dinan Performance Software Upgrade

Also Recommended:

DINANTRONICS Performance Tuner (D440-1604-ST1, D440-1604-ST2 & D440-1604-ST3):  The DINANTRONICS™ Performance Tuner is a highly engineered and sophisticated piece of computer hardware and software that enhances engine performance, without negating or voiding your new car warranty coverage and without affecting long term reliability or the functionality of on-board diagnostic systems. It is also the only tuning device emissions legal in all 50 states. The ultimate objective of developing this piece of technology was to provide the ability to control every signal entering and exiting the BMW factory Engine Control Unit. These items are unique to Dinan and together they embody the apex of performance engineering in a powerful, reliable, and warrantied package. 

High Flow Carbon Fiber Cold Air Intake / Strut Tower Brace (D760-0036):  Dinan high flow carbon fiber cold air intakes, like most Dinan products, have a sleek and functional appearance that embodies high performance. The F10 550i cold air intake allows cool outside air to be pushed into the engine via a pair of supplemental carbon fiber intake ducts located at the front of the engine bay while also providing structural stiffness to the strut towers. Dinan engineers have painstakingly developed custom tooling to ensure the entire Dinan cold air intake system is sealed like a factory replacement, thereby preventing hot air from the engine compartment to compromise its effectiveness.  Improved induction airflow offered by Dinan cold air intake systems increase engine performance, even more so if used in combination with other performance enhancing Dinan products.