Tucson gas quality

[Dosia]

Anyone else here experiencing knock? I had AED tune my car but even with the stock tune I was seeing knock and I ruled out exhaust rattles. Is the gas here just piss poor?

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[import111]

I have not logged info on my Stang but when I had my Evo X less than 6 months ago, Chevron gas made it knock and run horrible. Tried multiple tanks and always the same thing. I had better results with Shell. As a whole, AZ., CA., and NV all have bad fuel compared to the rest of the country.

 

[Dosia]

Yeah, after emailing back and forth with Shaun I think I am just going to buy the larger injectors and go the E85 route. My buddy with a bmw 335 says e85 makes a world of a difference and is the way to go.

 

[Zerobar78]

When I moved to Phoenix from Ohio with my 04' GT I had to retune my car for the same supposed 91 octane and lost 12rwhp, the fuel here in the southwest is garbage.

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