We performed a vehicle dyno test to gather data comparing the OE to Garrett chargecooler. Multiple back to back dyno pulls measure chargecooler effectiveness by comparing horsepower output, inlet and outlet temps, OBD II data.

• Engine gains 12.4 horsepower and 4.9 lb-ft of torque on average after heat soak (10th pull)
• Engine gains 18.7 horsepower and 6.4 lb-ft of torque at the 15th pull

OBD II Data

• After heat soak, charge air flow rate and pressure increase
• ~2 lb/min higher charge air flow rate after 10th pull
• ~1.5 psi higher charge air pressure after the 10th run

Thermal Data

• Garrett chargecooler outlet temp is ~5 °F lower each run before heat soak
• OE chargecooler has 90% instantaneous effectiveness
• Garrett chargecooler has 92% instantaneous effectiveness
• Garrett chargecooler outlet temperature is ~10 °F lower after heat soak
• At heat soak, outlet temperature drops by 10 °F

CFD Optimization

• CFD optimized design allows Garrett engineers to improve flow distribution through the end tanks
• The charge air flow shown in the chart depicts air flow per passage
• The variation is ~7% from the mean flow

Heat Transfer Modeling

• CFD also helps improve thermal performance