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Steve @ BMS/Fuel-It! Steve @ BMS/Fuel-It! is offline
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Posts: 21,116
Join Date: Oct 2012
Car: 135i
Default G8X M3 and M4 Fuel-It! Flex Fuel kits have been released - 11-18-2021, 01:24 PM

Hey all,

We've released our new flex fuel kits for the G8X with our brand new braided lines and a super easy plug and play installation. The new kit simply replaces the stock fuel line in the engine bay so it only takes about 30 minutes to install.

Click here to purchase kit


The G8X flex fuel kit and install location...









Closeup of install location...



Here's the complete installation guide...


Remove the strut brace with a 15mm socket or wrench and then remove the engine cover.





Remove the gray safety clip on each end of the stock fuel line...



To remove the stock fuel line, let the car sit overnight so there is no fuel pressure. Then push the line on as much as possible, depress the black clip, and then pull the line off.



Install the fuel lines, analyzer, and harness on to the ethanol sensor as shown. Connect the ends with the 3/8" fuel fittings to the ethanol sensor as shown.



Here's a video showing how to connect the fittings.

How to install our Cam-Lock! style fitting. - YouTube

Install the new fuel lines with the sensor and analyzer installed...









Connect the analyzer to ground...





Connect the white wire to the JB4 pin 4 of the DB25 connector...



Connect the power wire...












Click on our banner to visit our website!
Video of our Stage 2 LPFP upgrade installation.

BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways.
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