Timing ?
 

Not sure what i should set my timing at i now have arp studs maraine head gasket ,i am at 15.5 now i get 15 mpg in town its a dually 3.55 gears and a 5sp 4wd and whts in my sig i would like to improve my gas mileage a little any help would be appreciated thx :c:

I would set your timing at 16.5 degrees its what my buddy vinny was running his at and was getting aroung 18mpg

Any vehicle you have is not going to get the mileage in town that you would on the highway. I think 15 is pretty good. You got to think the redlights, and stopping and going all the time.

thx alot for the input just about to make a trip to california tomorrow i'll see what she does on the hiway set cruise at 65 and try to keep boost below 10 thx again aloha :c: