87 Octane Tune vs. Diabo Tune....difference?

[jnkirk1974]

Obviously, I understand that one is for 87 octane and the other one is for 93.
I also realize that parameters are probably dramatically different.

I just want to know......how big is the performance difference between the two? Any reviews that compare the two?

[06MonteSS]

big difference in performance, as the 93 tune has the spark/timing advanced and more aggressive air/fuel curve, whereas the 87 does not and uses the stock timing settings.