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Originally Posted by murphy
yes the ecu in the subies are very good but I've never seen any cars ecu that will compensate for highr flow injectors because higher flow injectors will supply more fuel at every rpm range your cars stock ecu is programed to run a certain size injector. The SAFC 2 will control the fuel amount easly with no problems with running rich. remember scott all stand alone ecus require you to tell it what size injectors you will be using so it knows what the flow will be and calculate for it once you have you base map done same with a stock ecu at the factory. here is a link for where I read about the fuel delivery mod for turbo rs cars. http://www.ravensblade-impreza.com/ |
What you call the "fuel delivery mod" is normally called the "parallel fuel rail" mod. It's intended to ensure equal fuel pressure to all 4 injectors, and is usually helpful. Some cars are worse than others about leaning out #3. And like Scott and I said, the ECU will read the O2 sensor and trim fuel as needed to compensate for larger/smaller injectors, within reason. 10-15% bigger is within reason. And SAFCs are still not viable alternatives to a reflash, because the ECU is going to remap fuel around the SAFC, just like it has since the 2000 MAP engines came out. There really is no substitute for reflashing. There is not a single better alternative.