I am not familiar with what EvoScan does specifically. As for later Mitsu ECUs, Charlie has software to tune them. I beleive it is Mitsu software, but am not sure. Making us of this would of course remove the need to wire up an aftermarket FMS. Our discussions on this were more about optizing for fuel efficiency than upping HP. Nominal gains in HP would be welcome, but thought there was room for much inprovement in MPGs.

I am hoping to explore this futher with him this year when we do the MT swap into the 00...

Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand!
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 65k
Daughter's: 06 Eclipse, Keeping it Mitsu!
FSMs: MitsubishiLinks.com