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Discussion Starter #1
The Megasquirt 3 has the capability. Maybe it would be a good thing to set the car up for Flex Fuel..
 

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I believe almost everyone uses the GM Flex Fuel Sensor.
 

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I use the GM sensor made by continental on two different vehicles. Cheap and works well, seems all the aftermarket higher priced ones are these with a sticker on them anyways.
 

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Discussion Starter #4

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I was told they have the same frequencies & was recommended to use the Continental VDO.... No real feedback yet.

As it was only 3/8” pipe,I didn’t want it on my fuel supply. I decided to add a take off on my return line & also went with compression fittings to AN. T from the return line passes through the Flex fuel sensor & returns to tank.

 

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Discussion Starter #6
Good deal. I was thinking I would run it on my Return as well..
 

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Good info...I am looking to convert from C16 to E85 over winter and was starting to research the sensor configurations and availability.
 

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If you have access to good consistent E85 I wouldn't even worry with a flex fuel sensor. Even then if it wasn't a daily driver I would probably just use a decent tester and adjust as necessary. IMHO unless you are on the ragged edge a couple % either way doesn't seem to make any real difference. Just my $0.02
 
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T'd in the return is the only way I recommend running them. In line they can even restrict return flow causing fuel pressure issues at idle. If you are plumbing the system now, as in a fresh fuel system install, take a look at the Power House Racing Flex Fuel Sensor Dual Bypass. Here's the link
 
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