If your tuned for just strait 93 octane will 93 with 10% ethanol have a negative effect on the car under boost?

 

Oxygenated fuel adds power.

E10 is very common, and is good to use. You probably were tuned on it already, since it's been standard for quite some time now.

These all add power to straight gasoline: Methanol, Ethanol, and Ethers such as MTBE (used in VP Q16)

 

yeah like a year ago Walmart was the only gas station around here where I saw the ethanol stickers now I see them at almost every gas station

 

We just stared to see it around my area i used to get 93 oct from Exxon but now they only sell 91 crap,then a Shell station moved into town and they are the only one selling 93 in town so this is new to me.

 

the 10% of ethanol in the gas is good??

 

what state do you live in? i hope they never take away 93oct in NY i remember when we use to have 94oct! i dont know why they took it away

 

Shell 93 is the best quality pump gas I've used. Keep going there

And yes, 10% ethanol is a very good thing... There's a reason people do E85 conversions to their cars... because 85% ethanol is 105 octane!

 

Not far from you Maine.

 

why are they taking away 93oct???

 

As far as i know only Exxon dosen't sell it anymore.Shell still has it.

 

mobil has it right around the corner from my house.shell as well but those are the only 2 that i see the 10% on

 

Positive effect.
Worse mileage.

 

E10 = More Octane = More Powa!

 

does it affect mpg?

 

It is normal.