PCM adjusting for driving styles?

Gas is certainly not gas.

I am used to a Canadian diet of 94 octane.

Having just arrived in the wonderful United States just 3 hours ago and now in need of a fill up where should I go to obtain the highest possible octane rating :?:

I am in Washington State.

You have until the morning to feedback.........but I'd like to know NOW

Can't say for around there, but the Shell V-Power is 93 here. That'* the highest I've found here. Some Sunocos may have 94.

Good luck finding anything over 91 out west :( For some reason 93 isn't as widespread as it is in the eastern US.

TRUE!!! that!!! I have the highest octane here in Minnesota that I am aware of.... 92 octane at the local Holiday, yet a local private gas station 2 blocks from me only has 91 octane, but I get better performance and economy from them.
AS for the west coast I am clueless..... maybe some race tracks might be open?

Why is that?
Why can I get 87 89 or 94 in Canada and only 91 here in US only 200 miles away :?: :?

Is this prohibition :?:

here in missourah, we have no sunocos. i like shell, but sometimes the price difference makes me feel ripped off sometimes. i also get phillips, mobil and sinclair. they all seem the same. i definatly notice a difference with QT gas(maybe cuz its 91 octane instead of 92/93?). i only go there if desperate.

hah, i've been driving the exact same way all week long...this was an immediate change.

Sometimes that "extra power" you feel after a fill up is because of the new cold gasoline you poured into the warm from ambient + returned fuel mixture in the tank. Colder fuel is denser and more efficient that hot fuel.

However, I do always fill up at well distributed fuel companies, I'm always paranoid of cheap gas stations, like they have crumby hoses and dirty rusty fuel tanks underground or something. Or lie about their octane levels.

well comparing 91 to 94 is not fair. The highest around here is 91.. I switch around gas stations, I've never really noticed a difference.