So on the 7747 using the $42...'747-v4.3.xdf there is the "turn off for data logging" parameter category (DFCO, PE, HIWAY) There are also EGR and AIR in that list, but neither of those pertain to my application.

Question: Should DFCO, and PE be disabled when recording BLMs for tuning the '7427 like you can do on the '7747? Just wondering.

And the '7427 doesn't have hiway like the '747 does it?