97 Impreza outback sports only came with 1.8's or 2.2 models. Mine is a factory 2.2 I've read people swapping to the 2.2 from the 2.5 in a legacy or forester not exactly sure why..2.5 should be more bottom end torque but who knows.. After hours of chasing the fuel I've found that my injectors get fuel and 12v but are not getting the - signal from the ecu to actually fire fuel into the cyl. Checked for shorts and or lose connectors but I've got nothing. The day it shut off in the driveway I pulled a plug to check for spark and out of my own peace of mind ( I didn't change them when I got the car like I normally do) it was amazing the car ran as good as it did the gap via being wore out was like 100 thousand lol I'm wondering if the ecu kept upping the votage trying to compensate and killed itself.. Guess I'll try a computer and see what happens..