Toyota leaving IRL for Nascar

[Andy]

Is there much technological advancement when you can't use EFI.

Of course there is - its all about maximizing the package you have to work with, regardless of carbs, efi, steam power, etc.

Need you use that tone. I was asking, in terms of Carbs, I would think most of the tricks would have already been found and it's now more about aero, weight management and cheating.