The DO88 Charge Cooler Manifold has been developed for various BMW G-Series models fitted with the B58 Gen 2 engine and the Toyota GR Supra A90. This aluminium Intake manifold combines an integrated air-to-water Intercooler with a high-quality 102 mm-thick bar-and-plate core to provide a compact and precision-engineered solution.
The charge cooler utilises cast end tanks developed using 3D scanning, CFD analysis and 3D printing. The system is designed as a direct replacement for the original part and remains compatible with the standard bonnet cover. In addition, a thermal spacer is included to limit heat transfer from the cylinder head to the Intake manifold.
Features
- High-quality Bar&Plate air-to-water Intercooler core
- 102 mm (4 inch) thick Intercooler core
- 11 water cooling channels compared to 6 on the original part
- Cast end tanks for optimum distribution of air and coolant
- Developed using SolidWorks and Computational Fluid Dynamics (CFD)
- Prepared for optional additional port injection
- fuel rail with female AN-8 connections available separately
- Compatible with Injector Dynamics ID1050x-34-14 injectors
- Compatible with Bosch EV14 Compact (K) injectors
- Injector plugs included when port injection is not used
- 1/8” NPT connections per cylinder for nitrous or methanol injection
- Blanking plugs for all injection connections included
- Integrated sensor platform with three 1/8” NPT connections
- Additional vacuum or gauge connections integrated into the manifold
- Two 1/8” BSPT connections for water temperature measurement or venting
- Thermal spacer reduces heat transfer from the cylinder head
- Specially developed FKM silicone O-rings for optimum sealing
- Easy access to the screw-in filter for oil changes
- Direct-fit design requiring no modifications for installation
- Includes mounting brackets for wiring harnesses and bonnet cover
- Suitable for original and aftermarket bonnet covers with OE connections
- Also fits in combination with the optional fuel rail with a minor adjustment
- Aluminium construction suitable for higher turbo pressure levels than the original plastic manifold
Technical specifications
- Product type: Charge Cooler Manifold
- Material: Aluminium
- Charge cooler type: Bar & Plate air-to-water core
- Core thickness: 102 mm (4 inches)
- Number of water cooling channels: 11
- Air temperature under identical conditions: 26°C compared to OEM 41°C
- Airflow at 0.1 bar / 1.45 psi pressure drop: 873 CFM compared to OEM 595 CFM
- 47% higher airflow compared to OEM
- Peak power gain measured: 5 hp
- Highest power gain in the mid-range: 18 hp
- Highest torque gain: 28 Nm
- Three integrated 1/8” NPT test ports
- 1/8” NPT connection per cylinder port
- Two 1/8” BSPT vent/temperature ports
- OE reference: 11618647977
Contents of the set
- DO88 Charge Cooler Manifold
- Thermal spacer
- Injector plugs
- Plugs for 1/8” NPT connections
- FKM silicone O-rings for thermal spacer and Intake manifold (12 pieces in total)
- Mounting brackets for various components, wiring harnesses and bonnet cover
- Fitting hardware
- Installation instructions
Frequently asked questions
Does this Charge Cooler Manifold fit under the original bonnet?
Yes, the system is designed for use with the original bonnet and is also compatible with aftermarket bonnets featuring OE fittings.
Can additional port injection be fitted?
Yes, the manifold is prepared for additional port injection with an optional fuel rail and compatible injectors.
Are plug caps included when port injection is not used?
Yes, injector plug caps are supplied.
Are there additional gauge and vacuum connections?
Yes, the manifold features three integrated 1/8” NPT gauge ports and two 1/8” BSPT connections for temperature measurement or venting.
Is the system suitable for vehicles with a mild hybrid powertrain?
Yes, but for vehicles with a mild hybrid engine, the alternator must be modified in accordance with step 11 of the installation manual.
