89 Gas on 87 Tune

[Down N Dirty]

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?

My guess is if 89 is the same price as 87, then 89 is E-10, and 87 is straight gasoline.

PS, sorry we hijacked your thread with gambling shenanigans.

[coolio4433]

Originally Posted by Down N Dirty

My guess is if 89 is the same price as 87, then 89 is E-10, and 87 is straight gasoline.

PS, sorry we hijacked your thread with gambling shenanigans.

No problem. I guess I'll just have to experiment a bit and see how it goes.

[Longshot270]

Maybe try what I mentioned earlier, increase timing .25 for every octane over normal then keep raising it until you think your close enough to the limit.

[88Racing]

That's what I thought about the Twin Cities and E10!
Don't like putting that stuff in the bike when I ride up their. Try to make it into WI where I grew up to get the straight premium again.
I would probably only go .5 on the timing.

Lars

[coolio4433]

Thanks for the advice everyone.
I'll start out running a few tanks on 87 first to build a basis for comparison and then maybe try the 89 and bump the timing by 0.5 and see if it makes a difference or not on anything noticeable.

I might have to drive the truck more often though or it'll take me forever to conduct this test!



(yes there might be snow on the ground by then)