89 Gas on 87 Tune

coolio4433 · #1 Thu, August 6th, 2009, 03:02 PM

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?

***88Racing*** · #2 Thu, August 6th, 2009, 03:09 PM

Quote:

Originally Posted by coolio4433

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

***Longshot270*** · #3 Thu, August 6th, 2009, 03:09 PM

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.

coolio4433 · #4 Thu, August 6th, 2009, 03:12 PM

Quote:

Originally Posted by 88Racing

Is everything E10 up there?

Lars

Sadly yes

***Longshot270*** · #5 Thu, August 6th, 2009, 03:16 PM

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

coolio4433 · #6 Thu, August 6th, 2009, 03:20 PM

Quote:

Originally Posted by longshot270

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.

***Longshot270*** · #7 Thu, August 6th, 2009, 03:24 PM

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

Down N Dirty · #8 Thu, August 6th, 2009, 03:47 PM

Quote:

Originally Posted by longshot270

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.

***Longshot270*** · #9 Thu, August 6th, 2009, 03:56 PM

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.

Down N Dirty · #10 Thu, August 6th, 2009, 04:07 PM

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