
Originally Posted by
Liquifire
you must re do your pcm at the same time you replace your pulley. Otherwise you will create a lean condition and have a very likely chance of blowing your motor if you do not. This condition would exist throughout the RPM band and you could not baby it or take it easy to get around this. You would have to drive without the belt on your SC if you do not do these at the same time........just thought I would warn you in advance. ZZperformance rents the pulley pullers for $30.....their pulley systems are good, but do not buy a pcm through them for the 3.4 setup.