Reviews

Mk.6 GTI Stratified ProTune
[Mk6_GTI_ProTune]

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1–6 of 6 items
  • Joshua F. - Apr 15, 2026
    Clayton did an awesome job tuning my 2011 MK6 GTI running a CTS K0-4X hybrid turbo. He was patient, answered every question I had, and was excellent with communicating throughout the process.
  • Dustin F. - Dec 03, 2025
    Stratified is, in my opinion, the best custom tuner for the MK6 GTI. Clayton was patient and helped me with issues after installing the Aux Fuel Kit and LPFP took the extra time to explain things and offer feedback.

    If your running (or plan to run) a K04 or aftermarket turbo
    If you have a MK6 GTI running larger than stock turbo and have access to E85, just with their Pro-Tune. The car feels almost stock in terms of drivability and delivers smooth, linear power. It took a few revisions to finalize the tune Their Pro-Tune on Ethanol Blend completelh changed how the car feels. Ethanol really wakes up the 2.0 and now almost feels naturally aspirated.

    Stratified still supports the MK6 when most tuners moved on. Their Pro-Tune is a great option for anyone looking to dial the car in.
  • Erick L. - Dec 24, 2024
    the best experience in tuning your mk6, the communication with my tuner John D. was immediate and we understood each other very well, this option is excellent to get the best out of your GTI
  • James L. - Jul 22, 2024
    The entire ProTune process was simple and enjoyable. John D. helped me dial in my CTS K04 and was incredibly patient with me even though I wasn't able to get data logs done quickly due to my schedule. Each iteration of the tune was more refined than the previous one, and it was really fun to experience the incremental improvements.

    Would definitely recommend the Stratified ProTune to anyone looking for a simple and enjoyable experience!
  • Brandon S. - May 22, 2023
    Tuning was smooth and easy. Car feels better than it ever has. I was able to choose exactly how I wanted the tune to be. I can’t recommend it enough.
  • Tyler P. - Oct 27, 2020
    I worked with Aaron L to get a proper tune on my car with its new CTS KO4 Turbo. He did a fantastic Job dialing it in to make sure the boost curve was nice and smooth. Car feels amazing to daily drive and I cant wait to get it out to autocross. Always a great experience at Stratifed.
1–6 of 6 items