The L98 corvette table maxes at 46* with a programmed limit of 41.84* to override the table. Stock the distributor is set to 6* advance and the computer is designed to account for this. Now lets go so far as to say the computer is not factoring it out and the hard limit is not actually there, Highest you will see is 52* at 2000-7000rpm with a MAP of 40. The only way to get to this point is with the throttle plate closed so coasting/ decelerating. For Loaded situations the table shows closer to 42* under normal cruising conditions but remember the hard limit and the factored advance.
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