Very worthwhile, check the pictures in the post right next to this one about UIM/LIM cleaning. Those are pictures of my injectors at 80,000 miles. While youre down there, its not hard to do at all, and its cheap to do.
2001 BMW 325i Sport, Stickshift

'96 Mercury Mystique V6 *TOTALLED*

For sale:
Alpine CDA-9811
Eclipse Amplifier
Pioneer Tweeters