Help with tune, goes randomly extremely lean


Dec 1, 2009
Need a little help, i have been trying to get this tune down and thought i had it rich but headed in a good direction at WOT. But then i will do pulls on the same day with essentially the same tune and get a huge lean condition as shown in the log. The correction also does not seem to start working until its way to late. Im not sure if its a failing alky pump, blowing out spark, fuel pump issue, or maybe voltage issue. Any help would be appreciated, thanks

SD2 powerlogger running speed density w/ alky.


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