Researching E85 and flex sensors.
Alright so running the OS from a 2002 Fbody (Torqhead).
This OS doesnt support flex but the 12216125 from a Tahoe does.
I understand Pin 56 is the flex sensor input. The fbody shows this pin "not used" but i assume if a wire is added and the OS accepts flex then the pin will be active?
Running boost and flex, when running pump gas or running flex the pcm obviously adjusts fueling based on ethanol content measured by the flex sensor. How does the pcm adjust spark? Im assuming pump gas or low ethanol content depending on what the pcm is tuned for will use the main spark but running ethanol will adjust using the Flex fuel spark modifier?
Where is the best place to mount the sensor on an fbody? I read the supply line is better to use than the return but physical location matter?
I need pump, injectors and sensor plus wiring. Will stock lines be ok? Im not worried about the metal ones but more of the plastic ones.
Probably have more questions but thanks guys.
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