Intake system from Dinan brand, world known manufacturer of BMW performance parts, for M240, M340 and M440 with 3.0l B58 engine.
The devil is in the details which is where Dinan thrives. Coupled with maintaining Dinan's standard practice of utilizing a sealed system to ensure as much cold outside air as possible is employed Dinan engineers focused their attention on the intake pipe itself where numerous improvements could be made. In factory configuration, the intake tube comes complete with baffling and a small Helmholtz chamber to reduce unwanted sound. As a byproduct, these features also cause a more turbulent airflow path that robs the factory system of potential power. These 2 specific details are diametrically opposed to Dinan's intended market's desires so the removal of these features was paramount.
Through numerous iterations, a carbon fiber intake tube was developed that eliminated flow disruptions and allowed the natural sound of an unimpeded intake tract to sing. All told this thorough methodology of design allows the Dinan carbon fiber cold air intake for the B58 engine to provide power and torque gains on a completely stock vehicle. An impressive feat on today's turbocharged engines.
Not to be outdone by the performance side of the equation the B58 intake also is completely made up of carbon fiber unlike 6 cylinder intakes of the past where a mix of materials was used. Not only is the intake completely carbon construction but the quality of the material has been improved over previous generations as well. While looks are surely important, and this piece has that department covered in spades, the improved construction and coating also guarantees that the appearance of the engine bay with the Dinan intake will not be marred over time. Built to present well, perform well, and last the duration, the Dinan B58 carbon fiber cold air intake is a modification that is a must for any high-performance build.
- Faster acceleration time even without remap (just think how fast it will after appropriate software tune)
- Sportier Sound
- Improved throttle response
- Larger volume air box (30% larger than stock) that completely seals for maximum insulation from power robbing heat
- 34% increase in filter area (stock: 76.3in², Dinan: 102.1in²) for optimum flow
- Optimized carbon fiber intake tube
- Free flowing injection molded Air Mass Meter housing (8% larger then stock)
- Bolt-on installation
BMW M240 (F22/F23)
BMW 340 (F30/F31/F34)
BMW 440 (F32/F33/36)