Well I just got my car tuned by APR, well I got the chip at Kerma TDI and Charlie was most helpful and very well priced. I love the chip, I went with the Stage 1 for right now till i get my injectors in then I will upgrade to the 1+. If you have a Jetta 1.8T or Audi I would recommend this chip 100%. Give them a try they have a 6 hour free trial if your not sure if you want to do it or not. I think most company's do that.