I've had this link in my bookmarks for a while
http://www.club-306.com/guides/306_turbo_tuning
I'm considering doing some of the mods to my 405 just to make it a bit more driveable. It's all good and well when it's on boost but sometimes it's just a bit lacking.
I'm particularly worried about affecting the reliability - but I have read that these engines run very lean as standard, and can handle the extra 20bhp or so without any extra modifications. True?
XUD tuning
Moderator: RichardW