My coworker just finished putting a new motor into his 2002 9-3. He had a 2.0L Turbo motor but put in the 2.3L motor from a NA model. We figured the PCM cound make up the little bit of difference but it seems to just not want to run right. He says that a factory tune from a Viggen model would work since it is a 2.3L turbo but he'll also settle on a custom tune. But nothing crazy since its his dd and he drives from kenosha to huntley every day.
TIA
TIA