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wideband O2 readings. what are you seeing

12.0 to 12.3 but i think mine is a bit fat . I know it runs better the closer i get to 13 but 12.5 is about as high as i have gone.
 
12.5 to 12.8 works for me, my top end looks near new after 1500ish miles with redline and 112
 
What are you guys seeing or tuning for at part throttle say 5500 and 6500 cruising?? Same as WOT???
 
Mine still seems fat at 15-16 O2 from idle to 5000 rpm. I was running really fat and now use a EGT and rarely see over 900 F. at these low rpms. This on my turbo m-6.
 
yea I see 15-16 at part throttle and it seems Ok ben that way two seasons and 13.1 at wot and plugs look great!!! I think some guages read diferintaly
 
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