Our 03 stops like a sports car compared to my 00.

Idle should be ~750rpm.

How long does it take to throw the codes, etc.? If it happens fast, come to me and we can throw the 03's in yours. Can't take it out for, say, a week's test as it is the wife's DD. but we could swap for a couple hours.

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