Timing Effect on Spoolup

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cmitchell17
Sep 8, 2008
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I wanted to see if I could lower timing (lower than stock (-3,-1 degrees)). To help spoolup faster

I have also been working on trying to make a minimal or very low smoke tune. Which is very hard with a 500rw tune becuase there is not enough resolution in the MAF limiting table in the cells above 2g/cyl.

I know this test isnt a very good way to show how timing changes spool but it was the best I could do. I also did more test with almost the exact same conditions and exact same timing and fuel and saw the same result, about 2/10s of a second faster when timing is lowered -3 - -1 degrees in the idle-2300rpm ranges.

This is with timing advanced from about 1-5 degrees.
Log37.jpg


This is with timing about -3 - 0 degrees.
Log38lowtiming.jpg


What is everyone else seeing for spoolup time? (idle to full commanded boost)
 
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