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  1. Apr s3 ko4

    So I have the K04 sitting in my garage waiting to be installed and I know I have to take it in to get my ECU flashed, but does anyone have any recommendations/ suggestions/ opinions on whether I should pay 1K to have someone intall it? or does someone have a step-by-step list on how to DIY with...
  2. Stupid misfire

    I don't know if you all remember a couple months back I ripped into my beetle to fix the water pump. Well a long story short I decided then would be a good time to upgrade my K03s with a K04. It is done now and I got the K04 flash. It ran good for about 1week now it is misfiring at 17+ lbs of...