89 Gas on 87 Tune
 

So the gas station closest to my house has 89 for the same price as 87 always. Am I correct to assume that I could see even better performance with an 87 tune by using 89 and bumping the timing up 1.0 like folks have done with 91/93?

Is everything E10 up there?

Lars

It would work, not sure about mileage or anything. I noticed a little more kick on the upper end of the power band when I would try it. Even before the programmer.

Sadly yes :(

Everything is 10% ethanol? I thought it was supposed to be hard on the rubber parts. Or is that just the E85?

Supposedly up to 10% or so doesn't cause harm to anything. Based on that assumption lots of states in the upper midwest have adopted the E10 fuel as the standard. (mostly as a subsidy to the farmers and ethanol plants in the area)

I do like that premium fuel in WI is still 100% gas. My car gets 2-3 MPG better on that stuff than the crap I get in MN here.

In central texas you have to drive at least 40 miles to find a station that sells ethanol, and when you do it is only E85. So I've never run it, almost borrowed a gallon of a friend's jet fuel though. He'd go buy about 5 or 10 gallons at a time as an octane booster for his truck...on top of the 93 that he always ran. lol

Hey there longshot, I'm sure you meant 100 low lead av-gas. Jet fuel is more like kerosene, or diesel fuel and only used in gas turbine engines. By the way, it is very illegal to run av-gas in your vehicle, because it does still contain some lead......but man does it let you make the horse power.

he called it jet fuel, but yeah it was the av. I dont know where he got the money to buy that fuel and a new set of terra grapplers every 6 months, but he did. lol

no one checks tanks around here, not even on the tax free ag diesel.

Avgas is only 4 to 5 dollars a gallon......the tires are costing him much more than that. :yikes2: