Honda engineers admit that the CVT could handle the Si's power & torque

[dallasjhawk]

I missed your comment earlier in the thread. My bad.

That's great information to have--thank you! Is there anything you've noticed with the tune that you can share? Any quirks? And I drive using 89 octane, so my next question is would 93-octane be required to get those power numbers?

89 will probably have a few less hp but not too many. The only quirk i hate is going back to stock when I go to the dealer lol. It feels so slow after running the +6 psi, I believe there is a +6 psi for regular grade gas too.

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[dallasjhawk]

I got up into the 38+mpg range on my drive to work today (about 50 or so miles), just filled up gas yesterday. Which is above the 36 highway rating of my model. 91 octane though, with Hondata +6psi, no reason not to go full premium fuel all the time. I'm sure the narrower tires on other models will easily do 40+mpg.

You know, I never thought about wider wheels and gas mileage. Im on 19x8 and stock was 17x7. I kept the radius within .1% but does width affect mpg?

 

[neteng101]

You know, I never thought about wider wheels and gas mileage. Im on 19x8 and stock was 17x7. I kept the radius within .1% but does width affect mpg?

Tire width and unsprung weight (wheel/tire weight) will affect your gas mileage... more tire contact patch creates more rolling resistance and the unsprung weight can make quite a difference thus lightweight wheels can do wonders too.

 

[sonicBOOMgray]

I got up into the 38+mpg range on my drive to work today (about 50 or so miles), just filled up gas yesterday. Which is above the 36 highway rating of my model. 91 octane though, with Hondata +6psi, no reason not to go full premium fuel all the time. I'm sure the narrower tires on other models will easily do 40+mpg.

Ghies, can't wait to get highest octance fuel from Shell oil and then Chevron. My previous J30A5 Accord loved Chevron Plus or Super.

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