Beyond the additional sound opening the semi-open intake takes the same path to success as its closed box counterpart. Improve upon the factory design by increasing flow via a larger airbox and filter element thereby improving throttle response and lessening the strain on the turbocharger for maximum efficiency. While box and filter enlargement and redesign are a major factor in ultimately producing a more potent intake, they are not the only variables in creating a more efficient design either. The devil is in the details which is where Dinan thrives. 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 which robs the factory system of potential power. These two specific details are diametrically opposed to our 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 intake for the B46/B48 engine to elicit gains of 6 HP and 6 TRQ at 5000 RPM on a completely stock vehicle.
Not to be outdone by the performance side of the equation, the B46/B48 intake also is completely made up of carbon fiber unlike 4-cylinder intakes of previous generations where a mix of materials were used. Not only is the intake completely carbon construction but the quality of the material has been improved 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 elicit a more pronounced sound, imbue the engine bay with some carbon class, perform, and last the duration-- the Dinan semi-open B46/B48 carbon fiber intake is a modification that is a must for any enthusiast that places sound atop their requirements list.
Looking for more sound than what can be attained from the standard Dinan closed box intake for F2x/F3x B46/B48 powered vehicles and don't want to sacrifice all the performance gains or the beautifully crafted carbon fiber design in the process? This semi-open variant of the same intake meets those demands using a revised lid with an additional auditory port so those intoxicating turbo noises can be more easily heard.
For those who already own a closed box Dinan intake (D760-0048) but now want to switch to the semi-open intake without purchasing a completely new kit, you can order the retrofit kit (lid only) seperately for $179.95. To do so contact the tech sales department at 1-800-341-5480 and request part number D763-0213-G-A.
50 State Emissions Legal (partial application list): CARB EO D-176-56 (2019-21 F2x/F3x 230i/330i/430i Only)
More Power: + 6 HP @ 5000 RPM & + 6 lb-ft @ 5000 RPM (+ 5 WHP & + 5 WTQ) without additional modifications
34% increase in filter area (stock: 76.3in², Dinan: 102.1in²) for optimum flow
Free flowing injection molded Air Mass Meter housing (ove 20% larger then stock)
Larger volume air box (30% larger than stock) for increased breathability
Semi-Open - Carbon Fiber - F22/F23/F30/F31/F32/F33/F34/F36
A pronounced sporty sound courtesy of a semi-open design
Dinan Semi-Open Intake - 2016-2021 BMW 230i/330i/430i
Dinan 17-20 BMW 430i Cold Air Intake
Optimized carbon fiber intake tube
Quick and easy installation
Improved throttle response
COLD AIR INTAKE B46 OPEN
Semi-Open Intake
DIN AIK
