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Old 02-16-2021, 08:22 AM   #645
Compelica
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Originally Posted by steve99 View Post
Hmm thats interesting.


The ecu can work out misfire by measuring the acceleration of the crankshaft after each cylinder fires, no acceleration it assumes misfire.


Im wondering how it would work out the learning for individual cylinder port and direct injectors since it only has one 02 sensor measuring comosite of all cylinders on a stock header but on many aftermarket its in one cylinder runner.
I realize I'm wasn't clear on my initial post, I have updated it.

The boxes from left to right are referring to the RPM ranges. In Techstream they are labelled Idle, Low, Medium and High. As I was doing only city driving at that time the low and medium values updated themselves after a few minutes which seems to correspond the trim learning at those ranges.
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Old 02-16-2021, 08:26 AM   #646
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Im wondering how it would work out the learning for individual cylinder port and direct injectors
The obvious one would be by injector ratio split
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Old 02-16-2021, 04:03 PM   #647
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The obvious one would be by injector ratio split

How would ecu know individual cylinder correction's with only one AFR sensor , could understand if it had one per cylinder


If its overall fuel correction can see how it would work.
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Old 02-16-2021, 06:24 PM   #648
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How would ecu know individual cylinder correction's with only one AFR sensor , could understand if it had one per cylinder
It's the LTFT RPM ranges, not cylinder.
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Old 02-17-2021, 05:55 PM   #649
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It's the LTFT RPM ranges, not cylinder.
ok that makes more sense then
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Old 09-06-2021, 10:08 PM   #650
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K&N Intake MAF Scaling out there?

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Originally Posted by Dom_J View Post
There's really not a MAF rescale out here for the injen short ram intake anywhere or a directory on the front page of this guide? This VGI tool is being difficult. I can't even copy/paste the results into RomRaider from the logs.

EDIT:

MAF scales for INJEN and TRD image attached but it'd probably be quicker to use the VGI tool than to hand jam these numbers. Can't attach excel files




.
Will the INJEN MAF scale work on a K&N typhoon CAI?

EDIT: just put the stock airbox back in I'm not trying to mess with the MAF scaling or any of that plus intakes do little to nothing...

Last edited by Collin Long; 09-07-2021 at 12:33 PM.
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Old 02-14-2022, 03:06 PM   #651
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Can I just manually enter in the maf scaling values from perrin in romraider since I cannot get the tool to work?
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Old 02-14-2022, 03:59 PM   #652
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yes
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Old 02-14-2022, 04:11 PM   #653
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yes
So I just change both the volts and the grams?

Edit. I see the volts are the same.

Last edited by 15WhiteFRS; 02-14-2022 at 05:10 PM.
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