NEW PRODUCT RELEASE: Dinan F90 M5 Cold Air Intake & Turbo Inlet Pipes

By: Dinan | 08/30/2021 < Back to Blog Home
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OPELIKA, AL. (August 30th, 2021) - Dinan is pleased to be able to announce a pair of new product offerings being added into the catalog; the Cold Air intake and Turbo Inlet Pipes for the F90 M5. Experience the Dinan difference today and never look back!


Part Number(s): D760-0049 & D760-0053


Application(s):



  • 2018-2021 F90 M5
  • 2018-2021 F90 M5 Competition
  • 2020-2021 F91/F92/F93 M8 (Inlets Only)
  • 2020-2021 F91/F92/F93 M8 Competition (Inlets Only)


The Quick and Dirty (Features and Benefits) (Cold Air Intake):


  • Increased turbo efficiency, reliability, and head room.
  • More Flow: 11% greater than stock (Stock: 575 CFM, Dinan: 637 CFM @ 28" H2O per bank).
  • Improved throttle response.
  • Center wishbone inlet/scoop incorporated as an additional secondary air source for maximum airflow.
  • Larger volume air boxes (31% larger than stock) that completely seals allowing an increased volume of air to be utilized.
  • 35% increase in filter area (stock: 56.5in², Dinan: 80in² per side) for optimum flow.
  • Bolt-on installation.


The Story (Cold Air Intake):


The M5 is the flagship of the marque and as such deserves to showcase the best possible components. The Dinan Carbon Fiber Cold Air intake for the latest generation of M5 holds true to that philosophy and offers arguably the best performing and most efficient sealed intake solution on the market. Quite possibly the most visually impressive as well.


The first thing noticed upon gazing upon the engine bay equipped with the Dinan intake is the sheer amount of gloss UV coated 2x2 carbon fiber. Stretching from one end of the engine compartment to the other, courtesy of a fully functional secondary air inlet wishbone, the material is not only beautiful to look at but serves the purpose of heat deflection as well. The wishbone, which mimics the equally impressive calling card of the F8x M3/M4 engine compartment, is purposeful in a different way. Instead of adding structural integrity, the wishbone serves as the conduit for a secondary air source deriving its contents from a central hood scoop located behind the front grilles. The additional air flow supplements the factory inlet locations on both the left and right air boxes with ambient air from outside of the engine compartment. These air boxes have been enlarged and equipped with massive filters to handle this increased volume and together with the rest of the system allow the intake to flow as efficiently as possible.


While the stock intake system is adequately suited to support up to stage 1 power levels that does not mean there is no performance benefit when upgrading to the Dinan system. Besides its amazing appearance the biggest advantage of the system, by virtue of additional and optimized flow, is the reduction of the pressure depression in the stock system. This equates to the turbo having to work less in order to achieve targeted power. With the turbo working more efficiently this also means a lower pre-turbine backpressure, lower turbocharger shaft speeds, lower turbocharger compressor discharge temperatures, and for the ability to achieve higher boost pressure levels. Coupled with the optional Dinan Turbo Inlets these effects are even more exacerbated and represent ideal optimum flow and efficiency. Paired with the natural improvement to throttle response, a minor bump to the acoustics, and a visual appeal that will leave anyone speechless the Dinan F90 M5 carbon fiber intake system is a perfect complement to the "best."


The Quick and Dirty (Features and Benefits) (Turbo Inlet Pipes):


  • More Power: Max gains of 22 WHP and 18 lb-ft of torque @ 6500 RPM on an otherwise stock vehicle. Average gains of 11 WHP and 13 WTQ from 2000 RPM to redline.
  • Outflows the factory inlets.
  • Larger internal diameter throughout (maximum cross-sectional area allowed).
  • More volume (~200% more than stock; 105 cubic inches vs. 35 cubic inches per side).
  • Carbon fiber construction for heat insulation and visual appeal.
  • Quick and easy bolt-on installation.


The Story (Turbo Inlet Pipes):

The Dinan Turbo Inlets are an easy-to-install bolt-on upgrade that eliminates the largest obstacle in the entire factory intake system, the turbocharger inlets themselves. They are an upgrade that is both cost effective and an important stepping stone in the modification journey to unlocking maximum power out of the luxury sedan.


From the factory, the plastic inlets are limited and allow very little volume to pass as they neck down dramatically to the turbochargers themselves. This reduction stifles flow and increases the pressure ratio pre-turbine causing the turbochargers to work harder than necessary. This is a problem Dinan engineers took great care in rectifying through exhaustive prototyping and testing to ensure maximum future power potential while also having compatibility with numerous potential configurations. The benefit of their hard work are Dinan Turbo Inlets that are constructed of gloss UV coated 2x2 carbon fiber and are designed to mate seamlessly with whatever level of modification to the intake system you anticipate (paired with either stock air boxes or the full Dinan Cold Air Intake System). Where the carbon fiber ends an aluminum adapter to connect to the stock turbocharger begins. Using the same factory locking system, installation in this area is straightforward and earmarked by a "click" when secure. The simplicity making this quite possibly the quickest and least aggravating installs on the platform you will encounter. The pipe itself has been created to offer the largest possible cross-sectional area all the way from the intake filter to the turbo, a staggering 200% increase in volume over stock. This is the key to maximum performance gains from the system and the reason for the organic and unorthodox shape of the Dinan inlet system. While the effects of the additional volume are pronounced on a vehicle equipped with the factory airboxes and results in average gains of +11 WHP / +13 WTQ from 2000 RPM to redline, the overall efficiency of the entire intake system is maximized when paired with the Dinan Cold Air Intake that is also delivering an increased volume of cooler air earlier in the intake tract.


Robust testing with a fully instrumented engine further illustrated the multitude of benefits the Dinan Turbo Inlets offer beyond the confines of the dyno room and flow bench. Simply put, the F90 M5 / F9x M8 Dinan Turbo Inlets assist in allowing the turbocharger to operate at a lower pressure ratio, which means it will operate more efficiently. This directly translates to lower pre-turbine backpressure, lower turbocharger shaft speeds, lower turbocharger compressor discharge temperatures, and for the ability to achieve higher boost pressure levels.




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