58 is low fyi. You want to be between 60 and 64, preferably closer to 64.
I would recommend checking this thread first:
http://www.automotiveforums.com/vbul...d.php?t=453370
You never know, your problem could be as simple as a clogged fuel filter/air filter or a bad plug. Do yourself a favour if you haven't done one in the last little while and do a tune up, then start worrying about fuel pressure and such.