There's NO timing setting that is always optimum. Optimum is at or very slightly below the faintest of audible "pinging"/detonation, That point is dependent upon fuel octane, air temp, engine temp, barometric pressure, carbon buildup, and other variables. To give you a number is at best just a starting point for correct timing adjustment. You have to do trial and error. One of the many wonderful things about current engine control systems is that nearly all of these factors are accounted for and adjustments are continuous electronically. Have fun! Marshall Goodknight ---------- Original Message ---------- From: "Louis M. Barrie" <lmbarrie@xxxxxxxxxxxxx> To: "Chrysler 300 Club International, Inc." <Chrysler300@xxxxxxxxxxxxxxx> Subject: [Chrysler300] Timing is Everything! Date: Fri, 23 Apr 2010 08:39:29 -0700 Weekend discussion topic: For all F, G and H owners ? What is the consensus for optimum timing for our 413?s? I am running a +13 degrees using Racing Gas (101 octane) and Big Yellow runs great and purrs like a kitten! The trade off is that gas is about $6.80 per gallon. Sure, that?s a lot of money, but with annual mileage of about 1500 total, it?s tolerable. I have run timing as low as +5 degrees, but Big Yellow was not happy, and still would ping somewhat, especially when warm. What say you fine folks? Louis M. Barrie West Hills, CA Home of Big Yellow [Non-text portions of this message have been removed] ____________________________________________________________ Penny Stock Soaring 3000% Sign up for Free to find out what the next 3000% Stock Winner Is! http://thirdpartyoffers.juno.com/TGL3131/4bd1caf2b694215a0c1st04duc [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/