The OE thermal management system for the B4x/B58 G-chassis BMW and Toyota GR Supra offers improved cooling capabilities compared to prior generations. However, it can still be overwhelmed under aggressive driving conditions or increased power levels, resulting in power loss. To avoid this, Dinan offers a budget-friendly solution with their heat exchanger.

The Dinan B4x/B58 heat exchanger for the BMW G2x/G4x and Toyota A9x Supra enhances charge cooling with a thicker core (45mm vs. OEM 26.75mm), providing 68% more heat transfer surface area for improved cooling capacity. The increased core thickness and full-size end tanks enhance thermal mass, allowing for better heat absorption, storage, and release than the OEM setup. With nearly a 12º reduction in charge air temps over stock, the Dinan heat exchanger ensures your vehicle can consistently deliver maximum performance for an exhilarating driving experience.

HEAT EXCHANGER ENDURANCE TESTING:

The Charge Air Temp Reduction (Intercooler dT) measures the temperature drop across the intercooler, which is crucial for performance assessment. Data collected at the end of each pull, typically around 100mph, reflects the peak load on the charge cooling system. Integrating the Dinan heat exchanger with the OEM intercooler effectively extracts more heat, minimizing performance decay over multiple pulls. This ensures consistent performance and optimal engine operation, even under demanding conditions.