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A member sold me a reconditioned EVIC, which I attempted to install in my 84 Daytona Turbo Z, in place of the chronometer that it came with. Wired it up per the FSM, and it didn't work. Researched on the internet and found a different pinout listed for 87+ (this was from an 88). I rewired the connector and it worked!
However, the two wires not provided in the factory harness were the fuel flow and speed sensor wires. They are located at the logic module, however. So I spliced in and brought the wires to the center stack, plugged them in and went for a ride. Full functionality!
The info provided is based on the gas gauge signal, the speed sensor and the HEP, which must be approximated to yield the fuel flow, based on known injector volume and firing rate. So it's as accurate as the constant that is provided for fuel flow from the injector, and the speed sensor.
As expected, a cold start and driving yielded about 9-11 mpg for the first half mile. Going back over that same stretch fully warm gave me 18-21 mpg. So it's a good approximation that cold driving gives about half the gas mileage that warm does. That's what I had already calculated, using algebra, for my last car.
Highest instantaneous reading was 58 mpg, lowest other than the zero at idle was 10 mpg while going at low speed in low gears. Average cruising at 35 mph in 5th gear around town was 35-36 mpg.
This suggests that getting the engine warmed up as quickly as possible is of the greatest benefit. No other repair, gimmick or adjustment will double your effective gas mileage.
Taking Kathi out in the car on date night tonight!
However, the two wires not provided in the factory harness were the fuel flow and speed sensor wires. They are located at the logic module, however. So I spliced in and brought the wires to the center stack, plugged them in and went for a ride. Full functionality!
The info provided is based on the gas gauge signal, the speed sensor and the HEP, which must be approximated to yield the fuel flow, based on known injector volume and firing rate. So it's as accurate as the constant that is provided for fuel flow from the injector, and the speed sensor.
As expected, a cold start and driving yielded about 9-11 mpg for the first half mile. Going back over that same stretch fully warm gave me 18-21 mpg. So it's a good approximation that cold driving gives about half the gas mileage that warm does. That's what I had already calculated, using algebra, for my last car.
Highest instantaneous reading was 58 mpg, lowest other than the zero at idle was 10 mpg while going at low speed in low gears. Average cruising at 35 mph in 5th gear around town was 35-36 mpg.
This suggests that getting the engine warmed up as quickly as possible is of the greatest benefit. No other repair, gimmick or adjustment will double your effective gas mileage.
Taking Kathi out in the car on date night tonight!
