My 107 loves it. When I bought the car in Texas and drove it home to Minn., I noticed quite a bit of greasy soot all over the back of the car. What I was actually doing was blowing all the carbon out. The PO had only driven around town.
I regulary run her at 80-85mph. If I don't feel like speeding, I just leave it in second gear and drive around between 4 or 5000 rpm. Have fun.......
'89 ASC/Mclaren Mustang #123