Gas mileage difference was calculated to be about 5% from what I had calibrated my DX motor to. NOT BAD considering after setting the
mpguino to the VX wiki spec for injectors, i just got 49mpg on my 20 mile test tonight.
To whomever reads this thread with a d15z1, BUY NEW PLUGS before throwing money at any other parts when trying to diagnose poor gas mileage or lean burn to normal transition "hesitation"
Plugs cured my problem.