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Engine Management and ECU Remapping This section is to discuss the various aspects of engine management modification for your Subaru.

when is a map tweek requied

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Old 03 July 2015, 04:07 PM
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bluenose boy
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Default when is a map tweek requied

Hi all I am a bit confused as to when a map tweek is required if swapping parts over.
I have a new aem short ram induction installed and mapped in the same day if I went back to stock air box and panel filter would it need tweaking or would it run fine.
Also fitted a 3 port boost valve can you change to a different manufacturers 3 port without tweaking map?
Sometimes I like just chopping and changing bits see what I like the look of or sound of best but not sure the can or cant with touching map all the time
Old 04 July 2015, 12:05 AM
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bludgod
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if the MAF scaling was changed by the mapper then changing back to stock maf would cause you problems. Changing the BCS to another brand may have an impact on the boost control tables as well - not all 3 ports are created equal so 30% on one solenoid may not be the same as 30% on another brand.
Old 04 July 2015, 04:56 PM
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bluenose boy
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Cheers bud I'll leave as is I think.
For talking sake if I log the map voltage on induction kit and then on air box if there the same does that mean it's ok .
Old 04 July 2015, 05:33 PM
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Only way to properly check is with a wide band sensor in the exhaust and confirm the fuelling is correct mr.
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