C7 Pilot

In a couple weeks, I plan to spend a couple days at a track with my '16 Z51 Stingray. Totally stock.
I see that the track, in California, is miles from the nearest town, has several gasoline options - 91, 95.5, 101 and 110 (leaded).
I'm just wondering, if I were to buy a tankful (or two) of anything other than the 91 octane, (the highest available in California {thank you Mary Nichols, you jerk}, and your CARB gestapo), (1) how long would it take for the computer to learn and take advantage of the higher octane, and (2) would the difference be all that seat-of-the-pants noticeable? I'm far from an experienced track driver - intermediate at best in my opinion, but would i feel the difference? I wouldn't consider the leaded option - don't want to shorten the live of my catalytic converter.

Your comments and opinions will be appreciated.

coletrickle35

Unleaded Sunoco 101

C7 Pilot

What does that mean? Your recommendation? What you regularly use? Something else?
I would run 100 or 101, or even 93 like many do, if it were available where I live. But unfortunately 91 is the highest octane genreally and economically available where I live.

coletrickle35

Most Speedways in California offer Sunoco 101 octane as they are high test for racing cars. You should be able to buy it right at the track

C7 Pilot

OK. Thanks.
It's not a big deal, but do you think I would feel the difference?

91 octane = $5.76/gal
95.5 octane = $9.00/gal
101 octane = $10.00/gal

Is the juice worth the squeeze for the higher octane at my driving skill level? I'm thinking not, unless I could really feel the difference. Just thinking out loud.

db2xpert

Going to 95 might give some additional power and avoid knock retard.
Doubt you'd feel it in your seat of pants... A pro driver might see a difference in lap times.
On a dragstrip you would see the difference.

coletrickle35

High octane is not going to noticeably increase your horsepower but it will prevent knock at high RPM and is far better for your engine. Plus it feels super cool fuel up at the Speedway gas station.

Sellout

Most cars that have a recommended minimum of 93 octane (like ours) respond pretty well to anything above ACN 91 (arizona, california, nevada 91 octane. it's all the same)

The car isn't going to go beyond the factory HP rating much, if at all. What it will do is actually make the power it should be making. You're not making what the car is rated at with ACN 91. Driving across the border to oregon and filling up with 92 octane you can feel a subtle difference. Mixing 2 gallons of 101 octane into a full tank will give you right around 92 octane and give you the same result.

Neumonic2002

I run Boostane Professional in every tank just to make sure my car is making factory HP and don't have to worry about the quality of gas, 1/3 can in each tank puts me around 95/96 octane using 93 that we have readily available here in STL.

cv67

91 pump...jbsblownc5 is a Torco dealer here and in Socal, a bottle added to a tank wont hurt. Dont think it will gain either

goec2468

I would not drive it hard with 91, 101 is not adding anything.
I would go there with halfe a tank of 91 and fill it up with 101.
This will give you app. 96, for the lowest costs.

rb185afm

I run all day with 91 octane in my GS. This includes 100 degree plus days. Car will be fine, you just might leave some power on the table if your car pulls timing. Note, this is for a NA C7 and not the FI versions.