Does premium gas make a big difference over regular?

[AlmostFamous]

Maybe, Maybe not.

Something to keep in mind, most



I've seen that dyno before, but I'm sorry...the AAA report is much more accurate as it uses scientific method along with standardized testing procedure (same room temp, same engine temp, same warmup duration etc.).

Per the report,

"All runs were averaged using a Bessel Spline interpolation with no extrapolation of data. The averaged data was then graphed and integrated to provide the numerical comparisons for dynamic torque and horsepower produced using premium compared to regular gasoline."

We’ll have to agree to disagree.

Personally, I don’t mind paying an extra $5-7 a fillup for 93 octane for more timing. Financially, it’s a negliable expense for me.

Either way, the point is moot for me as I’ll be getting an E-85 tune along with larger fuel injectors in the next month and I’ll run E85 exclusively. The benefit curve is drastically higher with E85.

Sponsored

 

[millhouse]

We’ll have to agree to disagree.

Personally, I don’t mind paying an extra $5-7 a fillup for 93 octane for more timing. Financially, it’s a negliable expense for me.

Either way, the point is moot for me as I’ll be getting an E-85 tune along with larger fuel injectors in the next month and I’ll run E85 exclusively. The benefit curve is drastically higher with E85.

If you have ever seen a car dyno at noon and come back 4 hours later and lose 10hp, you'd change your mind. Hell, I've seen dyno numbers change based on how hard the car was strapped down. If a scientific method isn't used, you have to take the results with a grain of salt.

As for the cost, it's absolutely up to each individual. For me, it added up to be over half the cost of my annual insurance. I can't fault anyone for running premium fuel. I can however fault folks that drive 5000 miles a year and try to push the "it's a performance car" and "If you cant afford premium you shouldn't have bought it" narrative on others (not speaking of you).

 

[GT-SV]

I can’t tell you if there’s a difference that can be felt, I only put Chevron Premium in my GT.

Sponsored