My particular combo likes/tolerates a lot of timing and was set for around 22 degrees at 3000 and gradually increasing to a max of 28 degrees at 6500 rpms. When racing the car I add about 3 gallons of C16 to a half tank of 93 octane.
I was running the same amount timing on the street using only the meth injection (75% methanol 25% water) and 93 octane gas. I don't put nearly as much load on the motor when driving it on the street because I'm only into the throttle hard for a second or two and the tires are always spinning when I do. Dyno adds a little more load, but again I'm only into the throttle hard for one gear from around 3100 till around 6600 rpms and that only last for a few seconds.
Reducing the WOT timing a couple degrees for street use is just me playing it safe, incase my meth injection system doesn't come on or I'm forced to used 91 octane. Tune also has a pretty agressive reduction in timing, if air charge temps exceed 140 degrees...so that covers me for meth injection failure or driving it hard in the summer.
David