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back saying the same thing. As Harry has pointed out, our cars do not run in closed loop at high load conditions. In fact, anything over 0psi manifold pressure, our vehicles run in open loop. i.e., it is pulsing the injectors based on the values within the fuel map, which are set either by Nissan (in stock ECUs) or by the tuner that put the maps together. If you change the chemistry of the fuel in such a way that alters the H and C content per volume, you are going to screw with the fuel mixture. If the car is tuned for pumpfuel with 10% ethanol and then you go up to 15% ethanol, our cars will run leaner. This is the case with a larger majority of vehicles on the road today. Only the newer vehicles that are equipped with wideband O2 sensors can self- adjust for the differences in fuel chemistry. Now for cruising conditions our vehicles will still adjust the fuel delivery up to ~25% which is more than enough to accommodate for a 15% quantity of ethanol, but in manifold conditions over 0psi you are going to run leaner. Looks like it is time for "F" class programming.. Frick! Class"
Enthusiasts soon understand each other. --W. Irving.
Are you an enthusiast? If you are out to describe the truth, leave elegance to the
tailor.
Albert Einstein
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