4 thoughts on “Mk7 GTI Stock Intercooler Flow Test”

  1. Hi Jeff,

    My Tiguan ea888 gen 3 comes with stock IS38 turbo and running stage 1 @ 274whp.

    I am thinking to go for stage 2 with 200 cell catted dp but would like to keep the stock intercooler.

    Dont you think the stock IC should keep up with stage 2? Is it really necessary for me to upgrade the stock IC since it was paired with IS38 from the factory…


      1. From the results, 8whp lesser but it should keep up without having issues in term of reliabily. Correct me if im wrong.

        1. I don’t believe using the IC that VW paired with the IS38 is going to affect reliability.

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