do88 Mk7 GTI Intake Parts

do88 Intake System Flow Test

Background: do88 makes an intake system for the Mk7 that replaces the upper half of the airbox, the accordion hose, and they also provide a turbo inlet elbow. This test will be to evaluate the airflow through the fully assembled intake, along with using an aFe air filter. Test Procedure: The do88 intake system is […]

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ARM Downpipe Flow Test

ARM Motorsport Cat-less DP Flow Test

Background: ARM Motorsport provided a sample of their cat-less downpipe to conduct a flow test as a follow-up to the flow test with their catted Mk7 downpipe. Previously a CTS Turbo 3.5″ cat-less downpipe was flow tested and I am interested to learn how the 3″ ARM cat-less downpipe compares. Test Procedure: First, the flow

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GFB (L) & counterfeit (R) Package Comparison

GFB DV+ advantage versus Stock DV?

Background: Go Fast Bits (GFB) Diverter Valve + (DV+) is a bypass valve option for the Mk7 GTI that can supplement the OE stock diverter valve. During a discussion about diverter valves it was theorized that the GFB DV+ can improve the performance of the GTI stock DV. Looking over the GFB DV+ product description

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