i ordered saab 900 fuel rail with some 500 cc injectors.
for ignition and idle i will keep stock ecu and ezl ignition system.
the only think i want to know ezl ignition has an output with tacho signal .for arduino i have to use directly this signal
or i need to use vr conditioner?
i will go for speeduino 4.4 and spartan wideband ,ford escort tps and gm temp sensors.