Dinan Free Flow Stainless Exhaust for BMW F22 M235i (Without M-Performance Rear Valance)
Dinan engineers designed the F22 BMW M235i exhaust to improve 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 hard acceleration. Dinan also incorporates a Helmholtz chamber design that reduces resonance or “drone” at low RPM.
The system is built to exacting specifications to ensure perfect fit using the factory hangers. It is made from 100% 16 gauge 304 stainless steel and will resist corrosion for years to come. The design features twin 89mm ceramic black exhaust tips for a tasteful, high-performance look.
Maximum performance gains are 6 horsepower and 5 ft-lbs of torque.
Benefits of the Dinan Free Flow Exhaust:
+ Includes mounting hardware
+ Helmholtz chamber to reduce drone
+ Enjoyably louder, sportier Sound
+ 100% 304 stainless steel construction
+ Twin 89mm laser engraved ceramic black exhaust tips
+ 6 HP @ 6600 RPM, 5 FT-LB
DINANTRONICS Performance Tuner (D440-1605-ST1): 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.
We Also Recommend
VRSF Charge Pipe Upgrade Kit 2012 – 2017 BMW M2/M135i/M235i/335i/435i & XI F20 & F30 N55
VRSF Chargepipe Upgrade Kit 07-13 BMW 135i, 335i & X1 N54/N55 E84, E88, E90, E92
Pair (2) of 3.5″ Turbo to Downpipe V-Band Clamps for BMW N54, N55, S55, N63 and S63