I have a 1980 911sc that starts fine and seems to run fine for awhile, then it just dies when it is warmed up like it is not getting fuel. I was out today and it was running fine, then I parked it and when I went back out it started, then died. Usually if I leave it for 20 min or so I can start it and move on.

I had a problem like this a few years and the mechanic replaced the perma-tune unit and it has run fine for the past few years, but then started this similar symptoms again. Looking for ideas or a great mechanic around Boulder Colorado.

Thanks,
Steve