Hi group: Not to be the contrarian, but I have had petronix units on my K and on my G for years. They both run beautifully, and the only time I get any pinging is when I am unfortunate enough not to be able to purchase 93 octane gas. Pete Fitch In a message dated 5/23/2010 10:42:21 P.M. Eastern Daylight Time, pweihl@xxxxxxxxxxx writes: I couldn't agree more with Steve. Beside the G I have a 67 300, which I installed the electronic unit. The problem it gave me was severe pinging, the vacuum advance and distributor design advanced way too much. Adjusting the advance to eliminate the ping gave poor performance. Went back to the points and runs great, no ping and great performance. Had a 73 Dodge with the electronics and had to replace the electronic unit more times than I can remember, nothing but trouble. Paul [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/