soo i have been wanting to save up some money and get my car to run off higher octane fuel. but nowhere in my town do they sell anyhting over 90. the fuel here goes 85 87 and 90 i was wondering when i tuen it should i go for the tune under 91 octane or would it be ok to run our 90 octane level??
also same thing for my dads f150 he already has the tuner though

 

You confused me for a sec but I got ya.... I wouldnt trust anything at the gas station it might be lower than it says. I would just get the 87 octane tune just to be safe. Surprising you dont have anything past 90.

 

You should tune it for the fuel you can get.

 

I have never heard of 90 i have heard of 91 93 103