Its been quite a while since I have been on. I had a lot going on so was on for a few months then absent the last 9. Anyways, i bought an 88 928 S4 in the late spring of 2012. It has a Vortex supercharger on it. It needs to be tuned. I live in Council Bluffs IA, right next to Omaha Nebraska. There are no mechanics to work on it here as far as getting it tuned. I would like to see if any if you know a good mechanice in the Des Moines Iowa area that you think could work on it/have a supercharger. If not, I can go to KC. Any help would be appreciated.