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      10-28-2014, 08:22 PM   #1
Lambobimmer
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No LPFP sensor on Z4 35i. What does this mean?

So, I have played around with the fuel pump in my Z4 to run E85 over the past 6 months. I had some noise issues using with the Walbro 455 so I switched to the AEM E85 pump. I have been using this pump for the past few months with no problems and it seems to do a good job but there is something that I cannot figure out.

Unlike all of the N54 platform BMW's the Z4 35i does not have a LPFP sensor. What does this mean? Does fuel system in the Z4 work differently than the other N54 cars? I am curious because I wonder if the DME will only allow so much psi no matter what pump is in the car.

The setup is different on the Z4 than the 135 and 335. The bucket assembly has to be installed from underneath the car rather than from the top.

I am just curious about why BMW would not have included the LPFP sensor.

Any ideas?

Last edited by Lambobimmer; 10-28-2014 at 08:45 PM..
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