Dave has done lots of those FFS conversions, not just on the Camaro. When you use the sensor the PCM actually adjusts based on the content of ethanol/gas. If you fill up with 93 and top it off with E85 a hundred miles later you'll get something like E31. That's why the sensor is nice to have, and it's easy to do.
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2010+ Camaro 800 LPH fuel systems