Description
Heat is the enemy of performance. Keep temps down and performance will go up as a result of increased efficiency. It's really as simple as that.
In stock trim, testing made it painfully obvious that cooling was going to hold an even more vital role on the F8x (S55) platform to achieve maximum results. The stock cooling system heat soaks after only 3 pulls and allows the engine air intake temperatures (IAT) to rise dangerously. The ECU must then reduce engine power to prevent detonation. With the Dinan high-performance heat exchanger, the vehicle does not heat soak even after 7 pulls; more than twice the effectiveness of a stock setup!
Some may ask why change the heat exchanger and not the intercooler itself? Wouldn't it be more beneficial to go directly to the source of the charge air? The simple answer is yes, but at a cost. The stock system cools the intake charge by using a water-to-air intercooler, an expensive piece to engineer. The cooling circuit for the water that feeds the intercooler uses a primary cooler (heat exchanger) and a smaller secondary cooler in front of the passenger side wheel. Through rigorous testing of all 3 of those components and multiple combinations therein, it was discovered that the most effective performance per dollar solution was replacing the heat exchanger with a larger unit.
Further testing focused on the heat exchanger produced the optimized design you see before you. With 60% more volume and 19% more face area than stock along with being a whopping 40mm thick (stock is 24mm), it becomes quickly apparent how heat soak is averted with the improved setup. While the unit could be physically thicker the 40mm dimension was ultimately chosen with consideration of airflow requirements of the main radiator which is located directly behind the heat exchanger. A thicker core would diminish airflow and sacrifice normal engine cooling which would be potentially detrimental to the long-term health of the engine. The increased physical stature of the heat exchanger allows a reduction in water temperatures to the intercooler an average of 9° across the RPM range. The colder water entering the intercooler then improves its efficiency and allows the intake air to be cooled by an additional 6° average across the RPM range compared to the stock unit. The reduction in intake air results in an impressive 10 HP and 20 ft-lb of torque gain without any changes in the engine tune. The cooling unlocks some significant additional power when paired with the stage 3 DINANTRONICS Performance Tuner (where applicable).
Features:
- More Power: Consistent +10 HP / +20 LB-FT of torque on the stock engine tune
- 60% more core volume & 19% more face area than stock
- 40mm thick Dinan cooler vs. 24mm thick stock cooler
- 9° average water temperature reduction to the intercooler across the RPM range. Colder water improves intercooler efficiency and allows the intake air to be cooled by an additional 6° average across the RPM range compared to stock
- Significant reduction in tendency to heat soak
- Rubber mounted for vibration isolation
- Track tested to ensure consistent performance under extreme conditions
Fitment:
-
2019 - 2021 BMW M2 Competition Coupe
- 2015 - 2018 BMW M3 Sedan
- 2015 - 2019 BMW M4 Convertible
- 2015 - 2019 BMW M4 Coupe
About Dinan
Dinan knows European marques – quite literally – from the inside out. Whether you need hard parts such as exhaust systems or coilovers, or ECU upgrades to unlock your engine's potential, Dinan has the parts to take your BMW, Mercedes-Benz, or Mini to the next level.
SPECS
- Brand: Dinan
- Dinan Point Value: 2
- Emission Code: 7
- Height: 9 inches
- Labor Time (Hours): 3.5
- Length: 29 inches
- Max HP Gain: 10
- Max Torque (lb-ft) Gain: 20
- Product Type: Heat Exchanger
- Weight: 14 lbs
- Width: 17 inches
- UPC: 813725023380
- Part Number: D780-0001A
EMISSIONS
This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.
