question about fuel increase during v-tec

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how much is the fuel increased when v-tec ingages ? 15% 25% 30% please help i'm tring to get a custom chip made so i need to know
 
its not set. the ecu constantly monitors your o2 reading, load, and 23123 other things to deliver the right amount.

go to pgmfi.org and get a base map
 
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