- First Name
- May 12, 2018
- Reaction score
- Athens, GA
- 2018 Honda Civic Si Coupe
- Vehicle Showcase
Just the ones the install PDF told me to. I just reflashed it, and I'm taking it for a test drive now. We'll see if that fixes it. I know it's that sensor because when I plugged the stock one back in, I just got smog tested and it passed.between the two connectors, the new one for the flex fuel kit will only plug into one. It left me with a little doubt at first too.
As for the CEL... did you flash a tune with the ECT2 (and any other indicated) disablement(s)?
Just the ones the install PDF told me to. I just reflashed it, and I'm taking it for a test drive now. We'll see if that fixes it. I know it's that sensor because when I plugged the stock one back in, I just got smog tested and it passed.
If you're getting an Eth% reading now, the plugs are correct. It was likely a matter of a code/sensor disablement missing. If you have other mods, the PDF may not be enough.UPDATE: Changed my tune to the Phearable Stage 2.5. While flashing the ECU I disabled the P2185 (Secondary ECT), P0128, and P0138/P0139 (O2 slow response) codes and the CEL has not returned.
I have 2 theories: either my Flex Fuel Kit shipped with the incorrect plug fitting (mine is male instead of female, which is required to plug into the radiator where the OEM plug goes in), or the PRL instructions to install the Flex Fuel Kit is incorrect (They say in their instructions that the dongle from the Flex Fuel Module plugs into the Radiator, but the only thing that fits into is the OEM 1-wire plug, and NOT the radiator.)
It seems to be running just fine... in fact, outstanding. My car is insanely fast and runs fantastically. So I dunno...