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Originally Posted by chimmike
Never tune the SAFC without a correct wideband O2 sensor to reference........I highly suggest only tuning an SAFC on a dyno with wideband support.
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I use an Innovate LM-1 with a Bosch LSU4.2 wideband O2 sensor and do my tuning on the road.
Getting back to what morepower said earlier about timing maps. The timing maps I have seen (300ZX for example) show that, in general, for increasing engine load the timing is decreased from the maximum advance (there is an exception at low load and mid-rpm). So if the SAFC is used to increase the maf signal (with the intent of lowering the afr), the ecu interprets that as increased engine load and for the general case will lower the engine advance as well as increase injector pulse width. Is this understanding correct?
