do88 Frontal intercooler heat exchanger suitable for BMW G-Series / Toyota GR Supra A90

B58 engine compared to the F80 M3/M4 S55
The B58 engine shares similarities with the S55 engine found in the F80 M3/M4 models, as both engines feature a water-cooled intercooler combined with heat exchangers (water coolers) in the front of the car. These coolers cool the water that passes through the intercooler, the water releases the heat from the charge air before it enters the engine. The main difference is the B58's liquid-cooled intercooler design, which is integrated into the intake pipe, while the F80 S55's intercooler is a separate unit mounted on top of the engine.

Challenges of the B58 intercooling system
A common problem with tuned B58 engines is the rapid heating of the intercooler system, especially on track days. High intake air temperatures will cause the ECU to reduce power or put the car into limp mode. Even during sporty street driving, the ECU can back off the ignition and reduce power due to high intake temperatures.

Our solution
It is obvious that this system requires increased cooling capacity to prevent overheating. Part of our solution is our do88 Performance Front Mount Intercooler Water Cooler. The do88 Performance Front Mount Heat Exchanger is designed to provide increased cooling capacity and prevent overheating. It features:

• 80% larger core volume than original equipment (OE).
• Double row core which is 48mm thick, increasing the cooling surface by 36%.
• Quad-pass layout where water flows through the cooler four times instead of twice to maximize core area utilization.
• Slightly higher 5mm surrounding fin height (compared to the 4.4mm of the OE), which ensures good airflow to the engine cooler despite the increased core thickness.
• All aluminum construction, complete with durable TIG welded end tanks.
• Increased liquid volume for optimal heat dissipation.

installation
Our heat exchanger includes mounting points for the OE transmission cooler and both OE stone guards. Some adjustment to the OE plastic radiator mounting frame is necessary to fit the larger do88 Performance Frontal Intercooler Water Cooler (see installation instructions).