I went to a different independent shop who gave me an off the charts estimate. replace, replace, replace. Jack and Eurauto actually did troubleshooting to fix what was necessary and replace what was necessary. I had a long list but saved about 50% off the other shop's estimate. the other shop was shocked when i gave them $100 for diagnostic and left. I was really happy I did! All fixes were excellent as well. Porsche can be expensive, but I feel better now having found Eurauto.