AFR/LAMBDA/LOAD tuning question
#1
Senior Member
Thread Starter
AFR/LAMBDA/LOAD tuning question
I recently received an updated tune from my tuner(non nitrous tune)I notice that commanded lambse at WOT is noticeably leaner on this newer version right at about .86 or 12.10 AFR, compared to his previous tunes which commanded lambse at .82 or 11.54 AFR. Looking over the tune at a very novice level, all else seems unchanged except Maf flow rate lb per min. And from my understanding that is a pretty darn good indicator of crank hp by taking the number and multiplying x 10. With the new leaner tune, I'm seeing peak numbers of 45.39 and with the richer mixture tune I would consistently see 48.5+, Spark advance and valve timing events were basically unchanged also. I would have assumed that leaning it out a little would have created more power. Am I wrong to have assumed this? The only other PID I notice that changed was LOAD, and I have no idea how that is factored in the tuning at all. If anyone would like to look over the logs and share any insight let me know.
#2
11.54 for an NA engine is rather rich....that is around what I see with boost. For an NA motor, I'd expect it to be in the mid 12's at least.
Last edited by BadCon; 06-23-2019 at 10:12 PM.
#3
Senior Member
Thread Starter
Originally Posted by BadCon
11.54 for an NA engine is rather rich....that is around what I see with boost (I'm a tad richer). For an NA motor, I'd expect it to be in the mid 12's at least.
#4
Senior Member
coyote has a sweet spot around .780-.800
#5
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