MGM7 Intake Development – Beta 2


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.

MGM7 Intake - Beta 2
MGM7 Intake – Beta 2
MGM7 Intake - Beta 2 - Ortho View
MGM7 Intake – Beta 2 – Orthographic View

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

MGM7 Intake - Beta 2 - CFD Analysis
MGM7 Intake – Beta 2 – CFD Analysis

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.

MGM7 Beta 2 Flow Test 1
MGM7 Beta 2 Flow Test 1

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.

MGM7 Beta 2 Flow Test 2
MGM7 Beta 2 Flow Test 2

Test results:

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

Beta 2 Intake Flow Test Summary
Beta 2 Intake Flow Test Summary

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.

Beta 2 Intake Versus All Others
Beta 2 Intake Versus All Others

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.

Flow Testing TIP Effect
Flow Testing TIP Effect

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.


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


4 thoughts on “MGM7 Intake Development – Beta 2”

  1. Question, would you ever sell the completed final version as product to consumers? Really interested in this design.

    1. When I get it finished, I’ll make the design available to others somehow. I haven’t given much thought to what comes after I finish since I have a way to go yet.

  2. Would be great to see this come to market. Any ideas on what you’ll do to avoid making this a “hot air intake” ?

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