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Discussion Starter #1
Does a super-AFC take some control away from the ECU ?

They seem to have several buttons on them - does that allow you to modify the mixture on the move ?

If you had a heavily modified car from Japan that was tuned to run on their fuel and it had a super-AFC on it, could you use that to make it run ok on super-unleaded ?

Cheers
 

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u can adjut the fuel air ratio it interupts the signal betwwen airflow meter and ecu u can gain 20 brake if set up right just get ur fueling sorted for uk u may have to play with igniton timing run her on super or optimax
 

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It basically modifies the fuelling. Nothing more or less.

It intercepts the air flow signal from the air flow meter before it reaches the ECU, and modifies it (to parameters set by you) and subsequently alters your air/fuel ratio.

The % adjustment (they call it 'correction') is modifiable thru the entire rev range, in steps of between 500 and 1000 rpm, for hi and low throttle.

Hi and Low Throttle are defined as % of throttle movement. For example, I have low throttle set as 30% throttle or less, and HI is 40% or more. In between the two, and it interpolates.

Basically, it alters your fuelling based upon throttle position and RPM, using parameters set by you.

It can be a very good (albeit simple) tool if set up properly, but can also be a good engine killer if set up incorrectly.

Hope this helps...
 

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Discussion Starter #5
Thanks. Just trying to decide exactly what car to go for. Running a car on purely optimax would be a pain as nearest shell garage is 15 miles away.
 

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Will definitly be going for one of these in the future, my mate has one in his 200SX, superb piece of kit and ideal for assisting in the setting up of higher boost etc on the rolling road... :)
 

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Discussion Starter #9
But ....

if you have a loads of mods and get a new ECU with a custom map then would the AFC still be of any use, or is it just used to iron out the kinks in less than perfect mappings ?
 

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no matter how good a map is, there is never any adjustment done by any ECU for boosting levels that change day by day ambient temps.

My personal is that it is always good to have some variance in the car so that you can turn down the settings when required.
 
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