Quote:
Originally Posted by tmsbandman
I am playing around with my "Transmission Only" stock tune to see what I can do for max fuel economy. What is a "normal" amount of spark advance at 87 octane? It's at 1.25 right now and seems fine. Do I keep bumping it until I get valve rattle, then back down one notch? That's pretty much the drill I remember from adjusting a distributor long ago.
Thanks.
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Unlike the distributors, these modern vehicles are able to retard timing if it becomes over advanced.
Have you tried running the other tunes? For me, the tow tunes get me by far the best fuel economy.