I don't know if I'm running too much timing, or if I've got a mechanical problem, but on the dyno yesterday, all of my primaries started glowing red at high RPM during a pull. According to the dyno wideband, and my own previously on the street, the car is at 12.5: the entire pull within less than 0.1 AFR, and I'm running 25 degrees of advance until 5K RPM then 24 degrees until I finish the pull. I occasionally see 1 degree of spark retard, but usually none.
It's a stock bottom end LS3, 226/234 0.600/0.600 114 LSA with 4 degrees of advance, ported heads, Kooks 1.875 primaries, 3" duals, no cats, FAST 102 with a NW102mm throttle body 2010 Camaro.
Here's a video of it on the dyno. Right around 27-28 seconds in you'll see what I mean.
http://www.youtube.com/watch?v=ydURXwdlcIQ
Am I running too much timing? I can back it off to stock, which would be 2-3 degrees less. I also noticed the stock 2010 Camaro file has the AFR correction table adding spark in PE, so I'm generally 2-2.5 degrees higher advance than my main spark tables say I am.