DO88 Charge Cooler Manifold, BMW F-Series (B58) Gen 1

To Fit:

• BMW 1' M140i M140iX (F20 F21) - Engine: B58 Gen 1 - 09/2015 on
• BMW 2' M240i M240iX (F22 F23) - Engine: B58 Gen 1 - 09/2015 on
• BMW 3' 340i 340iX (F30 F31 F34) - Engine: B58 Gen 1 - 10/2014 on
• BMW 4' 440i 440iX (F32 F33 F36) - Engine: B58 Gen 1 - 03/2015 on
• BMW 5' 540i 540iX (G30 G31) - Engine: B58 Gen 1 - 10/2015 on
• BMW 6' 640i 640iX (G32) - Engine: B58 Gen 1 - 09/2016 on
• BMW 7' 740i 740iX (G11 G12) - Engine: B58 Gen 1 - 10/2014 on
• BMW X3 M40iX (G01) - Engine: B58 Gen 1 - 10/2016 on
• BMW X4 M40iX (G02) - Engine: B58 Gen 1 - 03/2017 on

Enhance your B58 engine's performance with the do88 Charge Cooler Manifold!

Background
The B58 engine, introduced with the F-series, has proven to be a real gem of an engine, capable of high outputs with great character. However, there are a few weak points that needs addressing, both for performance and reliability. The B58 comes equipped with a water-to-air charge cooler that is coupled with a front-positioned heat exchanger (water radiator). The heat exchanger serves to cool the water circulating through the charge air cooler, which in turn helps dissipate heat from the charge air before it enters the engine. The charge air cooler is integrated into the intake manifold on the B58, making it an intricate and dense construction, demanding accuracy in the design and execution by us as an aftermarket producer.

Challenges with the factory components
Owners of tuned B58 engines often confront the issue of rapid heat soak in the charge air cooling system, particularly when the vehicle is used for track days. Elevated intake air temperatures may prompt the ECU to decrease the power output, or even switch the car into limp-home mode. Regular spirited street driving can also cause similar issues.

Additionally, the factory installed direct injection system, with its obvious benefits, is not well suited for high horsepower applications or ethanol flex fuel usage. To be able to inject more fuel, many turn to installing port fuel injector spacers between the intake manifold and the cylinder head. The downside with this solution is that it positions the injectors in a funny angle. As a result, the fuel hits the walls of the intake runners, leading to potential fuel puddling.

As is often the case, factory components can become limiting factors when you strive for high power levels, particularly in terms of airflow. The factory (OE) intake manifold is such a component, that not only restricts airflow but also poses a significant risk of cracking under high boost levels, due to its plastic construction.

The do88 solution

• Bar&Plate core
  Our manifold features a Bar&Plate design air-water core, which incorporates densely stacked cooling fins, offering great heat transfer. The core is precisely 102 mm (4 inches) thick, maximising its effectiveness for this specific application. Both the air and water fins´ characteristics have undergone careful evaluation to achieve the ideal balance between optimal cooling and airflow.
  
  Innovatively designed cast end tanks
  The charge air and cooling water are evenly distributed across the core through carefully designed, cast end tanks. The development of these end tanks involved a comprehensive process, including 3D-scanning, multiple design iterations followed by Computational Fluid Dynamics (CFD) analysis and 3D-printing, before arriving at the finalised prototype. We opted for cast end tanks over CNC-machining. Casting all...