MGM7 Intake Development – Beta 2

Background:

Continuing the design evolution of an intake, in this post I discuss the latest version.

Beta 2:

A key question that came out of the first beta intake test was if increasing the outlet diameter would improve airflow. This was presumed to be the likely outcome, but making the part and then testing it was needed.

Shown below is the next iteration that incorporates a 3.5″ diameter outlet.

CFD analysis of the design shows a similar flow pattern to the first design with slightly lower velocity.

Test setup:

The new design is attached to the flow bench using a silicone hose that transitions from 3.5″ to 3″ and a 3″ adapter.

A second measurement is made with a DBV2 turbo inlet elbow attached to the intake and the elbow attached to the bench using an adapter that simulates a hybrid turbocharger compressor inlet.

Test results:

When connected directly to the flow bench the intake flows 594 CFM @ 13″ of H2O.

This is a 6.8% increase versus the CTS Turbo intake (556 CFM @ 13″ of H2O) tested as sold.

Progress Check:

The flow rate through the beta intake is shown compared with several commercial intakes.

Note: The test depression is 13″ of H2O which is approximately 50% of the pressure that I usually test using when including the turbo inlet elbow. Removal of the TIP increases the airflow through all of the intakes substantially.

TIP Effect:

Shown below is a comparison of flow rates when the TIP is connected and without the TIP.

Note: The flow rate of the intakes with the TIP removed is estimated for the test pressure of 28″ of H2O. This is because the flow rates exceed the flow bench maximum of approximately 620 CFM @ 28″ of H2O.

Conclusions:

Flow testing of the Beta-2 intake which incorporates a 3.5″ diameter outlet shows a 15 CFM gain versus the Beta-1 intake.

References:

• Beta-1 intake flow test
• CTS Turbo intake product page