That tunable diablo chip means you can set it to 3 diffrent progrms.
1) you can turn it off.
2) set it best performance n/a
3) set it for Forced induction. Super/turbocharger Nitrous.
All it is, is a custum programable chip, for all 3 settings you literally can change between with a flip of a switch.
Thats all that means.
Roz