The VXDIAG stuff is really, really terrible. It took hours of finagling to get the thing to work. The (pirated) software runs in a weird VM, driver installation requires jumping through flaming hoops, etc. It's a waste of money.
HP Tuners will also do a crank relearn, and you can use it for a bunch of other stuff (like installing a tune).
It is only required for a 2.4, and if I read the manual correctly, only with a new ECM.I find it odd that, after swapping engines three times on the blue car, I never had an issue with CAS learn. No DTC, no-start condition or anything else.
Must've been lucky, I guess.
It does, but I think that the sensors are probably consistent "enough" for good function of the engine. After reading what the manual has to say I think it may be something that isn't as critical as the original designers may have thought. As long as the ECM has been set to something it seems to be happy.Ok. This was on a 2.4 (turbo), but not a new ECM. But, the name implies it’s being trained for a given engine. Shrug.