| Here is the situation. The MAF has an upper reading for about 550 hp worth of air, give or take. If you plan on getting anywhere near that, you need a dual pop ECU program and average mode. If you are not planning on approaching that then you have the option. This is a limitation of the ECU. If the selin unit adds 600hp worth of air, the ecu will throw a code because a single maf cannot read that high and the ECU will not be able to process the information properly. using add mode give you a bit finer resolution. I don't believe anyone has made a compelling argument for this improved resolution having any practical gain, but it is what it is. What this means is that if x ammount of air reads a 4.5 volt reading and x+y ammount of air gives a 4.6 volt reading, using add instead of average will decrease the amount of difference required for the difference to be measurable by half, as far as the ecu is concerned. The reason ADD exist is mostly for simplicity. Add will work with a stock ECU. ADD will work with whatever chip you were running before you bought the sellin. If you are buying the chip after deciding on the selin and have any high hp aspirations, the choice is clear, dual pop program and average.
Antihero
These 2530's ain't half bad ;)
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