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giac tune mkv ecu

  1. MKV GTI
    Just got a GIAC stage 1 tune on my 06 gti. I paid to have it dyno'd before and after so I could see the actual numbers, but I didn't need to see numbers to feel the difference. It feels like a new car. I used to get my butt handed to me by my buddies 09 speed3, and now we're dead even in a...