E85 Stock 86 300zx NA

[bsdkllr]

how would you modify a stock image for e85. just adjust up the fuel mixtures or can you change timing too?

[Matt]

Usually we add 30% more fuel to an ECU running E85. So increase K constant (or Total Injection Multplier) by this amount to increase fueling

Later Nistune firmware (26P0F) has flex fuel maps where you use a flex sensor and harness, and add the 30% more fuel in the 'Flex fuel offset' table