| the designer of that circuit made the assumption that the output of the sensors is linear. This linear approximation only works when the output of both sensors are equal but as soon as there is an imbalance it produces very significant error. This means that it isn't really averaging at all and is basically the same as just reading off a single sensor (aka dummy MAF setup). This would also be incredibly unsuitable for use when attempting to add the flows for a single intake ECU. This circuit is off by as much as 25% when used to average and as much as 50% when used to add! My translator uses a microprocessor to do all the appropriate calculations to give you a guaranteed accuracy of 1% or better. (almost every unit is actually better than 0.5% in testing) Every last corner of the plastic case is needed to house a densely packed circuit board that consists of a purpose built computer to handle this specific task. I sometimes worry people think I'm selling a dinky little circuit with a big markup when this is certainly not the case. The graph below shows the error this other circuit produces when it is used to average: 
www.selindesign.net 
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03:38:40 11/02/09
