How To: Enable Flex Fuel/E85 on your Gen4 LS 

Forgot to mention how not to start you car on fire:
1) Install Flex Fuel Sensor First
2) Start engine and check for leaks! Don't burn your car down!
3) Drive it around and then check for leaks again!
4) Use the scanner to log the alcohol PID to ensure the ECM is getting data
4) Then update the tune....
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