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Actual AFR's to match AFR on fuel map?
What is all needed to be done in ecuflash so that my car will read the same AFR value i input in my fuel maps? it seems to be a little off,idk if thats normal or if i have something wrong like injector scaling or MAF scaling. thanks.
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You can switch to speed density and it will be easy to match, but on maf my fuel map was never close to actual afr.
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yeah i plan on switching to SD soon,just wanna get a good MAF tune on here for now.
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MAF makes AFR numbers matching fuel mapping a lot trickier than SD. Infact even on SD if you match your numbers at 11.5 theres no guarantee that it will be accurate to make your fuel map 10.5 and recieve a 10.5. This serves no functional purpose in MAF, and the only thing it does in SD is makes it a little more visual to work with, but then your VE table is!!!! lol.. dont get preoccupied with making them match in MAF is what Im getting at. If you want to switch to SD and tune VE accordingly that makes sense however.
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Dont worry about having the number in the fuel map, match your actual AFR. Just use the numbers as arbitrary numbers, higher means leaner and lower mean richer.
You can try to use MAF comp to make them match, but its time consuming and not worth it and sometimes you cant get it to match everywhere. |
Originally Posted by Boosted Tuning
(Post 10035275)
Dont worry about having the number in the fuel map, match your actual AFR. Just use the numbers as arbitrary numbers, higher means leaner and lower mean richer.
You can try to use MAF comp to make them match, but its time consuming and not worth it and sometimes you cant get it to match everywhere. |
bumping this
For SD If my AFR map = 11.0 and logged AFR's are 13, then adjust RPM VE(up) in range OR lower values in Fuel Map to get them closer? thanks |
Originally Posted by catman78
(Post 10600937)
bumping this
For SD If my AFR map = 11.0 and logged AFR's are 13, then adjust RPM VE(up) in range OR lower values in Fuel Map to get them closer? thanks Are you using 2d SD? |
yes, 2d.
My lean area is 2500k - 4500k, After 4500k the numbers are a bit closer Seems like I will need to add quite a bit to bring it down. Not sure how smooth the transition will be from <2500k. |
Lean spool is on or off?
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off
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Originally Posted by catman78
(Post 10601337)
off
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I did not do the initial SD tune so I did not touch MAP VE
Here's what I have seems close to 1:1 13.4376 12 25.6536 24 37.8696 35 50.0856 47 74.5176 73 116.052 114 145.370 144 415.344 413 Current RPM VE 500 78 1000 79 1250 85 1500 90 2000 98 2500 104 3000 107 3500 107 4000 107 4500 106 5000 105 5500 105 . . . My concern was having too much of an increase, say bumping up 3k-4.5k to 109 Not sure if surrounding areas need to be "smoothed" BTW thanks for your help, appreciate it |
I start tuning SD from MAP VE always... There are no radical changes from base setup, it might be slightly different than 1:1.
RPM VE map is very individual, but in my own car there is 120+ VE at higher RPM range (3500-8000rpm). |
ok thanks, will try ramping up in am
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