I had a Pro-M meter, and it seemed to work very well both in the way the car performed
and according to the infrared exhaust gas analyzer.
But yes, you do have to have it recalibrated for different injector sizes, which ain't cheap if you continuously change injectors....but then again, if you change them that often, you more than likely have the bills to have it recalibrated, no?
FYI, the rumor mill said that the Pro-M's made more HP by having a slightly leaner ratio at the top end. Nothing to support those claims -- as I said, the analyzer said everything was okay -- but I've heard that from more than one person. Anyone else?
