Don, <I would like to add an electric pump to be used as a boost pump for starting. It would then be shut off and the mechanical pump would suck the gas through the electric pump. I know many owners have done this, but my question is: Would the valves in the electric pump restrict the gas flow enough to starve the engine at higher speeds? No, I've run an electric fuel pump in line on my G for 30 years without any problem. < Is it necessary to use an octane boost additive to compensate for the crappy alcohol fuel we are forced to use? Or is it necessary to retard the timing some to compensate? Any consensus thinking? I personally have not used additives because when I tried them years ago they didn't make much difference. Having said that, the fuels available in CA have changed in the last 5-10 years and I am willing to try new things like adding two stroke oil as others have recommended. Understand that California has a different fuel than the other 49 states, and the Obama administration is pushing to have California fuel imposed on all the states, so eventually we will be all in the same boat. This will add to the cost of the fuel, as it has here, and may affect drivability. I know CA fuel evaporates very quickly, which is why an in-line electric pump is definitely of benefit. Bob J Danville Ca From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Donald Nissen Sent: Thursday, April 04, 2013 10:51 AM To: 300 Group Subject: [Chrysler300] Electric fuel pump & gas octane I would like to add an electric pump to be used as a boost pump for starting. It would then be shut off and the mechanical pump would suck the gas through the electric pump. I know many owners have done this, but my question is: Would the valves in the electric pump restrict the gas flow enough to starve the engine at higher speeds? Might it cause it to run lean? Our engines are thirsty beasts after all. Question 2: Is it necessary to use an octane boost additive to compensate for the crappy alcohol fuel we are forced to use? Or is it necessary to retard the timing some to compensate? Any consensus thinking? Don Nissen 300K [Non-text portions of this message have been removed] [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 bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! 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/