Re: [A/S] Counter Intuitive Fuel Cost Saving Tip

[AirstrmCamper@xxxxxxx]

However,  most modern engines (within the last few years) use computerized
engine  management systems which dynamically control the spark advance to  the
current, instantaneous, operating conditions.  They dynamically  advance the
spark (ignition timing) as much as possible without causing  pre-ignition
(ping)


Hi Oliver
This is very true. I added to my Van an MSD ignition system with a manual  
spark control inside. I can advance the spark down and up 15 degrees. Its great. 
 I use premium and get more power and better mileage that way. On hills where 
 older vehicles tend to ping with pre set ignition timing I can back mine off 
a  bit and then on down hills and straight always advance it back up. I know 
I get  more power for sure that way as I tested it on cruise control. When I 
set the  cruise, if I advance the timing just short of pinging I go up to 5 
miles and  hour faster, that indicates a more complete burning of the fuel in the 
 cylinders. 
I hope and pray the cost goes down for us all on fuel!
 
Jonathan  Michaels
1979 31' rear Bed Soverign  International