If you are racing in the death valley for an euduro, the car might have some pre-ignition with the stock ECU tune. Other than that, it's just money down the drain. A lot of states in the mid west / west coast don't carry 93 because they are above sea level and they simply don't need it.

its not so much to add power but for extra insurence. After running the car hard for awhile the engine will heat up and could possible get a few degree's of knock. Having the higher octane will prevent that.

I only run 94 octane in my car for that reason, even though my tune is still stock.

Stock maps are very conservative. In your EVO, you can easily pick up 20-40hp with just a simple tune and better gas mileage (I broke one in and couldn't do more than 21mpg on hwy at 65 cruise for 80 miles). It's all placebo effects.

Also there is a reason why you have a knock sensor on your engine..

yes i know stock tunes are very conservative...my car runs rich as **** (9.8 - 10.0) But the point still stands that running a car (any car for that matter) at the track might cause knock (stock or not)...things happen when you push the car hard all day. Putting higher octane is just more insurence. And out here in Edmonton, 91 octane at mostly all the gas stations is like 1.24/L... the station that has 94 octane is only 1.26/L...not that much of a difference but im able to get about 50kms more on a tank of gas with 94.

Awesome thread!

This is really something I'd love to do. I'm sure theres some sort of driving school in FL. I'll have to google now. :tup:

I have now signed up for the second class (performance driving two) on Sept 20th.

I can not stop thinking or talking about this adventure. The only negative is that it is on a Tuesday and will have to close up work. Too bad, another day off.

After using up the entire 96 octane tank I averaged 9.79 MPG. I hope to get this further down next secession. :icon17:

Oh your hooked now. get more vids?

:tup:

yea i just did my first track day yesterday with the Evo. I normally get 10.9L/100kms...i was at 23.5L/100km when i came off the track...went in with 3/4 of a tank, came out with less then 1/4.

I wrote Thomas Merrill an instructor :


Hello Thomas,

I am Tam. I took the Jim Russell class with you and my 370Z on Saturday. I wrote about it on a 370z forum. Could I impose upon you to give any critique of my performance, or simple confirmation I did attend.

Thank you. I am Mt Tam I am on the forum.

http://www.the370z.com/nissan-370z-g...chool-day.html

Here is another thread you might like Started by Mike at AM performance : http://www.the370z.com/track-autocro...-oil-pans.html

He wrote back:

Hi Tam!

Great to hear from you! I liked your write up on the school. As we talked about during the day, your smoothness is your best attribute, and one of those things that cannot be taught. The autocross competition is always fun for us to watch, because as soon as we put most students on the clock, they revert back to their worst driving techniques. But for you it was the opposite, clearly, and you can credit that to your smooth driving style. Do you have any aspirations to continue competitive driving?

Yesterday we completed day two of our differential and suspension testing at Buttonwillow, and the car has got a lot stronger. The fun part, we ran the car without the mufflers and with our new, lighter exhaust system. Car sounds beautiful. See the video and picture attached.

Thomas

Thomas Merrill Motorsports
14400 Reservation Rd
Salinas, Ca 93908
831-809-7306
thomas@thomasmerrillmotorsports.com
Thomas Merrill - Intro


http://www.the370z.com/attachment.ph...7&d=1314544416


AM Perf 370z at Buttonwillow - YouTube

:tup: