True but 91 is what the GTR is tuned for (the stock tune for America). Stock tunes for the most part are careful as hell, because not everyone has good fuel. One quarter of the GTRs sold in the USA are in California right now. Their 91 octane is utter dogshit. Can’t forget that.
Also can’t forget all the stock testing done by periodicals is done on 91 and is corrected to 0 DA. So those things are pretty tough to compare to tuned cars, running 93 octane.
Don’t get me wrong…you guys are killing it. But it’s not a bet I would like to make for even 1 Coke (on a B8 S4 vs. GTR).
For a laugh Pete, you should throw some 91 octane in your car and run 60-130. It will be reeeally depressing. JHM does a lot of their testing on California 91 and they bitch about it non-stop. They actually bring in 93 for some stuff, the Cali 91 is so bad.