Scanner
 

I just got a scanner and Throttle percentage at WOT was like 83%ish.. Is that normal? Or should it be 100%?

And timing advance at WOT it shows is how much is in the tune?

Camaro Corvette GTO CTS Performance tuner in Tampa
 

Actually your reading is 84% which is normal.

The spark you see is what the vehicle is getting at any point of the scan. That at some points can be less than what your are commanding because of spark knock reduction.

Ok thanks on the throttle %!!

Looks like I'm getting 28.5* WOT timing