How lean?
#3
Mod with training wheels
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They can afford to lean out a little bit in the upper RPMs because the cam is less efficient at drawing air into the cylinders. Dropping cylinder airmass=less boost in the cylinders=you can afford to run a bit leaner for a little more power. Depends on the cam.
#5
TECH Fanatic
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Safe tune for me, mine goes 11.2 at first wot up to around 4,500 then leans up to 11.8 ish. My truck pulls way harder up top....... could just be that large oil cooler I have up front behind my bumper
#7
Staging Lane
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mine is drowning it is so rich
i had my 1998 f-150, procharger 12lbs tuned a couple times and got the a/f that goes in to the o2 to give real time readings and the meter only goes down to 10.14 lol when i mash it it goes right down to it and probably past and stays there the whole time i am at WOT.
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#9
I've been running mine between 11.7-11.8 all the way to 6400 rpm, and it's working. But I see dyno sheets showing AFR climbing into the low 12's, from say, 5400-ish up to redline.
If leaner AFR is better at these higher rpm, then I might change things up on my tune. I was looking for some input from the experts here first.
If leaner AFR is better at these higher rpm, then I might change things up on my tune. I was looking for some input from the experts here first.