What grade fuel do you run?

[Suns_PSD]

93 Octane from Costco in the Powerboost. Even completely stock the 93 Octane added some notable acceleration as well as 1 mpg.

It's a fair price and also required with my Livernois tune, but don't do it for the cost savings.

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[Uncle_Booty]

87

If I tow, I'll run 93.

 

[tc3driver]

91 (generally the best I can get in my area) The way I look at it is simply that most of these small turbo charged engines tend to benefit from the higher octain rating, producing more power, and running more efficiently (generally the juice isn't worth the squeeze, as in you don't get the return on the investment in economy or power). I still feel it is better for the engine long term, so there may be a long term payoff.

If I had the 5.0, I would likely be running 87.

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