Believe it or not... NOT

[Bruce Plecan]

This doesn't make sense to me.  Static CR would remain the same.
The dynamic/effective CR should still be the same since nothing none
compressable was added to the mix.  The VE should drop (less O2 to react),
hence lower fuel amount needed, leaner mixture takes longer to burn hence
more timing needed.
Grumpy


| As the exhaust is 70% nitrogen and nearly 30% CO2 it is very nearly
| inert gas. Adding this gas without any change in throttle position
| increases the relative compression ratio.
| The raised compression allows the engine mapper to
| lower the amount of fuel  i.e. increase the A/F ratio to a greater
| number prior to the onset of unstable combustion.


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