TwinTurbo.NET: Nissan 300ZX forum - Tuning/mapping question
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Subject Tuning/mapping question
     
Posted by Vanos on January 03, 2010 at 6:03 AM
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Message I was reading ASH-SPEC tuning guide and noticed he sort of countersaid himself. Does anybody know the correct answer?

From his guide:
"It is possible to generate a higher TP value than the last column of the map.
The ECU will not fault and stop the engine when this happens, it simply begins to ‘guess’ on what it should do.
This condition is not optimized and you should strive to scale your maps appropriately."

A few rows down he writes:

"It is advantageous to a degree to actually set that last TP column value slightly less than your peak TP.
This makes it very easy to adjust fuel and timing when at your peak output as the ECU will simply use the values in the last column."

So, should it exceed the last column or not!?! First he says the ECU is "guessing" beyond the last column and then he says it just uses the last column. Which is it?

I asked him but didn't get any answer.

     
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