Forge Motorsport Turbo Inlet Elbow

Forge Motorsport Turbo Inlet Pipe Flow Test

Last week I received a parts delivery from Forge Motorsport in response to a request I made to flow test some of their GTI intake components.

One of the parts that they provided to me is their turbo inlet elbow.

Forge Motorsport Turbo Inlet Elbow
Forge Motorsport Turbo Inlet Elbow

After calibrating the flow bench the Forge TIP was attached using an adapter that simulates the turbo compressor housing of the IS20/IS38 turbocharger.  On the other end of the TIP I attached a stock accordion hose and the upper half of the GTI airbox.  This is the standard test setup that I check most inlet elbows with.  A few elbows cannot be tested with the stock accordion hose due to a requirement to use a larger than stock hose.

Forge Motorsport Turbo Inlet Elbow Flow Testing
Forge Motorsport Turbo Inlet Elbow Flow Testing

With this configuration the flow test produced a reading of 396 CFM at 28″ of H2O.

One of the other Forge intake parts that was provided is a silicone intake hose.  For the next test the stock accordion hose was replaced by the Forge silicone hose.

Forge Motorsport Turbo Inlet Elbow and Inlet Hose Flow Test
Forge Motorsport Turbo Inlet Elbow and Inlet Hose Flow Test

With the Forge hose being used the airflow readings increased to 407 CFM at 28″ of H2O.

Both of these test results are shown on the chart below:

Forge TIP Flow Test - Standard Adapter
Forge TIP Flow Test – Standard Adapter

Next up will be testing utilizing an adapter that simulates a larger turbocharger compressor inlet.

8 thoughts on “Forge Motorsport Turbo Inlet Pipe Flow Test”

  1. Jeff — your chart shows 14 different configurations. All but the upper four rows have no notation about the intake hose being used with the elbows in the tests. Did you use the stock accordion in all those cases?

  2. I’m not familiar with all these numbers and outcome.
    So is there much difference between 370cfm and 400cfm?,…. is it a sizeable difference or not really going to make any noticeable difference?
    Cheers
    John

    1. Hey John, in general I’d guess that you’d be unable to detect a difference between a part that flows 370 vs one that flows 400. The difference in airflow correlates with resistance caused by the parts. As the volume of air being draw into the turbo increases the difference in resistance will also increase, so there could be a situation where it makes a noticeable difference, but that’s probably with a large turbocharger and an upgraded valve-train to operate at high engine speeds.

  3. Do you think you could test ecs tuning turbo inlet pipe? If it shows not to be as good as the others i will sell it.

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