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Originally Posted by cory2081
I'm running r50D with -10% fuel (richer) programmed in for both RPM ranges. I see a solid 20 degree spark advance and -22% on the short term fuel. I just read all of this and seems like my timing is low compared to how far advanced some of you guys are running your timing. -22% on the short term fuel should mean it is running rich correct? Should I go for more timing or back out the fuel?? I always run good 93...sometimes Sonoco 95 (b/c it's only $.10 more).
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yes, -22% means you should see 11.8 A/F with a wideband.
i would lean out the A/F from 4k to 7k but richen the lower side of the rpms from 2k to 4k. i was sitting at high 13's to low 14's A/F ratio.
timing isnt everything.