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Help Me Understand These Power Fc Settings...

SargeRX8

By SargeRX8,
in Engines & Forced Induction

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SargeRX8 Grand Master

SargeRX8

Posted
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The only way I can learn is by understanding what is done and why it was done. From what I gather, this setting should not have been changed. I was just asking for the functions of these settings, how they affect the tune and why they would have been changed. Clearly the tuner who did the initial tune on my car was just trying to get their money for the least amount of work. Maybe if I learn and understand what all these settings mean, I can write my own tune from scratch. Maybe its not broken, but its certainly been bent out of shape, so rather than slap some paint over it, lets beat it back into shape then put the paint on.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

what you "could" do is set the AFM values to the default values and rework your entire injection table, just leave the ignition table the way it is.

but be carefully the car might run excessively lean, so compensate on those areas once you have a feel for the map

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

How did you sort reversion issues? My air filters sound like Darth Vadar the way they breath in and out

this was on a single turbo setup, i moved the afm far away from the turbo which fixed my issues.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

You'd need to do the ignition table also. The AFM flow-voltage mapping is the load axis for both tables.

Come to think of it, you have a very valid point, changing the afm scaling will affect how the powerfc determines load

SargeRX8 Grand Master

SargeRX8

Posted
  • Author
Posted

like i said, if you are prepared to start again, then just reset the power fc and start from scratch. or you can just fine tune your cruise map and be done with it.

Fueling I can adjust. Timing not so much as I am not sure of the safe points and there is no standard principle. I shall do what you suggest as it is the easiest way. Prior to this though ill try the aem 1v nb simulation and see if this does what I desire.

paulr33 Grand Master

paulr33

Posted
Posted

as the others have said, why fiddle if you dont need to?

on this main screen there are two key settings

one is the afm bending range per voltage range

the values are 0 to 100 and are % correctional

these values remain the same regardless what AFM you select from the pre-set table

this allows the tuner to quickly and easily shift the load axis that is used without editing every single ING and INJ value on the map

so basically you can quickly and easily tune the whole car without editing tons of cells over and over

most tunes simply do this and its all good

selecting a specific AFM loads the corresponding AFM ramp table at the bottom (the 5 rows of numbers from 01 to 20)

this is the raw values for each AFM preset. dont fiddle with these unless you know what you are doing and are trying to address a specific issue with that specific AFM and a certain load point

adjusting the afm bend to all 100%'s will throw your tune out

leave them as is

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