Correct,with the exception of disabling PE, that is how 90% of people tune these cars. I have seen posts by DH where he makes a good point that since the MAF is stock you should use the stock calibration file and adjust Inj flow, base/PE fuel settings to get the trims to dial in. It all comes down to there are a few diff ways to tune these cars.
The most common logic is:
[If one has access to a wide band I normally adjust the inj flow so that commanded AF is very close to actual AF. they will never be 100% as they are using two diff types of sensors. once close, next dial in maf so that the trims lock in between + - 5% at cruse, then zero at WOT. Next get your WOT af adjusted to the desired AF and retune to get trims back to zero if they have drifted. If any KR is present you may need more mods or to lower timing. if no KR, its time to add timing or pulley drop.] this is basically tuning in a cliff notes version.
In that hpt file the injectors have been changed from stock and so has the MAF. So it would be a good idea to start with a stock file again and rework the tune. Also if you have a known issue such as the P0446 I highly recommend fixing that first as if it is being caused by a vacuum leak it will make tuning much more difficult. If it is a short causing the vent to open and close at incorrect times, it could also be causing tuning issues as well. get that figured out and fixed. If you don't have emissions inspection where you are maybe for the time being block off the engine side of the evap and just vent the tank to the air. see if that helps any in the tuning process.
