Originally Posted by dbworld4k
These sorts of questions are asked frequently. Check the E46 3 Series section: http://www.maxbimmer.com/forums/forumdisplay.php?f=60
Searching for answers to commonly asked questions usually yields quicker results than waiting for people to reply one at a time.
Also, check on bimmerforums and E46Fanatics for more information.
Thanks good to know which forums are good to go to, been searching since i posted and am learning that i have a lot to learn.
Found this post
on E46Fanatics that is a really good summary