Timing increase vs. boost psi ratio?

[Fred 86 GN]

Just put in a Reds 100 chip today and took the car for a test drive with DS hooked up. This chip has 27 degrees of base timing! Car ran very strong. Not sure I have quite enough octane in the tank though, since I was picking up a couple degrees of KR at 780mV O2. The GN is noticeably stronger than with the old 23 degree chip.

Here is the question -- is one degree of timing roughly equal to one psi of boost? Or two degrees of timing = one psi of boost?

Also, can chips be effectively "rated" by specifying the boost level to run them at? This 100 chip has the same timing as the 108 chip...just supposed to run less boost. Seems like a bunch of timing for 100 octane.

Thanks,

 

[Fred 86 GN]

**insert sound of crickets**

Is this one of those "unanswerable" questions?

1psi boost = 1 degree of timing?

1psi boost = 2 degrees of timing?

No relationship possible? Are they both non-linear?

Looking for empirical data...not a 1/14.7 vs. 1/360 calculation. You know, like "I went from a 28 degree race chip to a 26 degree race chip and was able to increase my boost by 3 psi and increase my trap speed by 2 mph" type of reply.