Quote:
Originally Posted by Drifty//
Are you doing the upshifts or letting the car decide?
I'm interested in the revs. Wondering if that's what the car thinks is optimal.
|
I'm in manual mode always, even for street driving. I'm too much of a control freak to let the car shift itself.
(So why not a standard manual transmission? I knew this car would see a significant amount of track time. While I can heel-toe, I'm not good enough at it at this point to trust myself to consistently bang off a couple of rifle-shot downshifts coming from 130+mph down to 60mph under threshold braking while approaching turn 1 on a typical road course.
)
Anyway, the calibration of the RaceKeeper's interface with my car's ECU via the OBD II port appears to be slightly off. The car's tach indicates that I upshift anywhere from 7500 to about 8200 rpm. The RaceKeeper records these engine speeds as a few hundred rpm less. It's also apparent on the throttle calibration--when I'm flat to the floor, the RaceKeeper records that I'm at 75% throttle. I've spoken to the company about it. It's a known issue that they're evaluating. A hardwire connection straight to the car's ECU would probably be more accurate. At least the car's speed is accurate, because it's coming from the system's roof-mounted GPS antenna.