My understanding of the Italian Tuneup is you get the engine well warmed up, drop it into a lower gear, then take a long run 10 or 20 miles, at high rpm. Depending on your redline the RPM will vary. My Aerostar 3.0 will 1-2 shift at 6000 on WOT kickdown into first gear, so I figure 4000+ is a good range for Italian Tuneup on that vehicle. She normally turns about 2800 on the freeway. This is supposed to blow it out, but I would suggest water injection then Italian Tuneup.