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  #41  
Old 06-03-2021, 03:37 PM
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Did you delete your last post Happy? I got a notification...

That thing must be sooooo fun to drive. Not that it matters but how many miles are you getting out of a full tank?
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  #42  
Old 06-04-2021, 02:26 PM
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Quote:
Originally Posted by crystalworks View Post
Did you delete your last post Happy? I got a notification...

That thing must be sooooo fun to drive. Not that it matters but how many miles are you getting out of a full tank?

Yeees!! I had done a follow up, and when I posted it, I guess it signed me out and deleted half of the script. I’ll give it another go.
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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53

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Old 06-04-2021, 03:34 PM
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So after numerous trips to the filling station, it seems that the average ethanol content at my pump is about 80%.

I believe the system is well sorted, and I have not had any issues with the fuel pump or any of the other fuel related components. There hasn’t been any hesitation, cutoff, etc.. Everything has been functioning normally.

The adaptation to the system thus far in my opinion is complete. It definitely was not an overnight process. I used a mixed driving style to facilitate the process. I would take a road trip, and when I returned home, I would let the E53 completely cool down, and sit for the rest of the day/night. The next time, stop, go, etc., and then same process. Cool down, wait another day. I continued with process for about the 2 weeks.

Once the adaptations started to finalize, it became clear that the M54 was performing differently on ethanol versus gasoline. Once the timing advanced to its peak point, and with higher fuel volumes in the cylinders, the tone of my M54 was like nothing I’ve heard before. It is truly amazing the tone that this 20 year old BMW is producing in it’s current state.

The fuel economy has not been an issue either. And in my opinion, has maybe even gotten better. I believe this is a result of using less pedal. As all of you E53 owners know, these vehicles have some girth. It takes a bit to get them rolling off the line. But, I’ve noticed with ethanol, I am using between 20-25% pedal, versus 40-60% pedal with gasoline to get the same result. So the extra torque produced by the ethanol is actually more efficient, than the gasoline. So, although the fuel itself is less efficient, the volume needed, compared to gasoline becomes a factor in that equation as well.

I can say without a doubt, that the BMW M54 performs substantially better on ethanol than gasoline. It’s almost like driving a different vehicle. My E53 has never performed, or driven as smoothly, as it now does with this Flex-Fuel system installed. Also, since installation I have not had one CEL! It feels like in my opinion, these vehicles should have never been made to run on gasoline. My E53 has never been happier!

For running a BMW E53 on ethanol..! If it is a good enough fuel to run in an INDY or NASCAR, then I can’t see not running it in mine. Maybe gasoline is yesterday?
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