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  #31  
Old 02-09-2021, 10:39 PM
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Drunken E53

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I'm not hating, I swear, but I feel this is a "different strokes, for different folks" kinda thing. Backfire on a street vehicle seems immature and even improper maintenance on a vehicle, in my opinion. Just my opinion.

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No believe me I totally understand. It took me a moment to take it all in.

No these aren’t Uncle Buck backfires. LoL...

This has nothing to do with maintenance. This is a high performance bolt on, that allows the use of 105 octane fuel.

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Cool, very interesting. Thanks for the responses

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Anytime!
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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53

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  #32  
Old 02-09-2021, 11:19 PM
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https://youtu.be/f1Q_SkAkrTw
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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53

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  #33  
Old 02-20-2021, 06:25 PM
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I brought up the ethanol content by another 15%.



20% more to go.
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  #34  
Old 02-23-2021, 04:38 PM
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There should be no reason that you are getting spark knock or top end drop off if meth controller is calibrated correctly. It may have been your fuel source or you have had too much meth flow at higher RPMS. That should have showed up in dyno runs after you installed the supercharger.

In this area most who make the change to E85 are doing so because it is cheap race fuel and they don't want to be as concerned about having a lean condition. The are fairly frequent discussions about where to buy or the best place to buy E85. I assume they are not happy with some sources for E85 or it is not readily available, have never asked. I don't know if that is still the case but at one time the government allowed a 20% variance. E85 adjustments for seasonal changes in some areas can be as much as 40% though the bulk of the benefits of E85 are achieved at about 65%. Some say those fluctuations and not a problem, some say they are. Some say the change to E85 improved performance, some say it was insignificant.

Meth is alcohol based so cooling and octane boost benefits are similar. Running both E85 and meth takes care of any potential fluctuations of E85 fuel. I would continue to use 50/50 mix of meth.That should be the max benefit but you will need dyno runs to know for sure. If you have a custom tune for meth you may not need to change it but I would check to see if it is getting all of any benefits that are 'safe' to get. If I recall correctly you said you already have larger injectors and a greater volume fuel pump to handle the increased fuel volume needed for the supercharger. If not, you may need to make those changes so you don't create a lean condition. Without question I would test the changes on a dyno ASAP.

If you decide to overdrive the supercharger be sure it is capable of the boost increase all the way to redline. If it can you could increase shift points to see if HP/TQ curve improves, especially low end torque.
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  #35  
Old 02-23-2021, 07:18 PM
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Originally Posted by bcredliner View Post
There should be no reason that you are getting spark knock or top end drop off if meth controller is calibrated correctly. It may have been your fuel source or you have had too much meth flow at higher RPMS. That should have showed up in dyno runs after you installed the supercharger.
Correct BC, the 93 pump gas just wasn't doing it. It was pulling timing, and without meth, the E53 will knock badly, its not even feasible to rev past 4000rpm. The meth is calibrated nicely, I will elaborate in the next paragraph.

Quote:
In this area most who make the change to E85 are doing so because it is cheap race fuel and they don't want to be as concerned about having a lean condition. The are fairly frequent discussions about where to buy or the best place to buy E85. I assume they are not happy with some sources for E85 or it is not readily available, have never asked. I don't know if that is still the case but at one time the government allowed a 20% variance. E85 adjustments for seasonal changes in some areas can be as much as 40% though the bulk of the benefits of E85 are achieved at about 65%. Some say those fluctuations and not a problem, some say they are. Some say the change to E85 improved performance, some say it was insignificant.
I made the change to E85 for two reasons. One, I recently had meth pump failure, and its is difficult to find parts for my particular system. Already at 65% ethanol, I can run the E53 without the meth activated. So, if the system ever fails, and I cannot get replacement parts, I will still be able to run the E53 without knock. Two, 93 pump gas is getting a bit more expensive, so I wanted to achieve a better price point for my fuel.

Quote:
Meth is alcohol based so cooling and octane boost benefits are similar. Running both E85 and meth takes care of any potential fluctuations of E85 fuel. I would continue to use 50/50 mix of meth.That should be the max benefit but you will need dyno runs to know for sure. If you have a custom tune for meth you may not need to change it but I would check to see if it is getting all of any benefits that are 'safe' to get. If I recall correctly you said you already have larger injectors and a greater volume fuel pump to handle the increased fuel volume needed for the supercharger. If not, you may need to make those changes so you don't create a lean condition. Without question I would test the changes on a dyno ASAP.
Hell yeah BC! I will continue using the 50/50 mix. Meth, with the E85 is insane! That M54 has NEVER pulled to the top the way it does, when you dump all that fuel into it! Wise advice indeed. The company that engineers the piggyback system suggests meth users deactivate the system. But the results with the system activated are phenomenal. I do have a custom tune, however the piggyback tunes the E85 in real time. So, as far as fluctuations with the ethanol content, whether it be 50%, 75%, or 100% the piggyback ecm will adjust the fuel trims, and the dme will adjust timing. Its really an amazing system Its a true "Flex-Fuel" conversion but, for performance, not simply to use the cleaner burning fuel. It maximizes the benefits of the 105 octane. Yes, my E53 has larger injectors, and supports higher fuel volumes.

Quote:
If you decide to overdrive the supercharger be sure it is capable of the boost increase all the way to redline. If it can you could increase shift points to see if HP/TQ curve improves, especially low end torque.
I am sure there is room for more boost. But, the power she is producing at this point is more than sufficient. My E53 has been supercharged for nearly 10 years now, and reliability, thus far has never been an issue. I will most likely leave the specs the way they are.

On a final note. I am truly shocked at how much power was made with the addition of the piggyback ecm. I highly recommend this system for those looking to exploit the hidden power in their setup.
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  #36  
Old 03-03-2021, 08:58 PM
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Well... It appears for now, the station is topping out at 75% ethanol. The max posted on the pump is 83%, however the highest we’ve seen was in the upper 80’s. Maybe lower content during winter months.

I still can’t believe that E53 is running the same fuel as an Indy race car.
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  #37  
Old 03-04-2021, 05:03 PM
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Quote:
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Well... It appears for now, the station is topping out at 75% ethanol. The max posted on the pump is 83%, however the highest we’ve seen was in the upper 80’s. Maybe lower content during winter months.

I still can’t believe that E53 is running the same fuel as an Indy race car.
If set up for it you can run E85 in most stock engines but it's not a one size fits all.

The federal specs for E85 fuel is a minimum of 70% ethanol. It varies by time of year and state. E85 is a generic term not a federally fixed standard. Individual sources for ethanol can also differ, even in a small area it can be 10% or more. General rule is that the ethanol content is lower in the winter and increases in the summer. Some change the content 3-4 times a year depending on where you live.

Race only cars that use ethanol have the capability to adjust the amount of fuel to match the ethanol variation or for temperature/humidity. The same is true of their fuel delivery systems and ignition systems. Due to the cost it is rare that is the case of a street racer.

Even though almost any engine can run E85 if other changes are made it is certainly not necessary or effective or a cost saving for most.
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  #38  
Old 03-04-2021, 08:37 PM
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Originally Posted by bcredliner View Post
Race only cars that use ethanol have the capability to adjust the amount of fuel to match the ethanol variation or for temperature/humidity. The same is true of their fuel delivery systems and ignition systems. Due to the cost it is rare that is the case of a street racer.
bc, it is still unbelievable to me, that the E85 piggyback ECM, and the BMW DME, are functioning as stated in your quote. My E53’s fuel trims, and timing are running in real time, not Alpha N. I can run 87 octane gasoline - 110 octane ethanol. Whatever I pump into her, she will run it! With 87, 89, and 93 the Meth better be flowing! I’ve run 87 with Meth, and as long as you’re not pedal to the metal, you can get by. So far with the current ambient temps and humidity, I have been able to disable the chemical cooling. But, we will see how that goes when the Texas heat hits.

Quote:
Even though almost any engine can run E85 if other changes are made it is certainly not necessary or effective or a cost saving for most.
As a necessity, I’ll leave that to one’s interpretation. It’s effectiveness, definitely a success, and I believe N/A and Forced Induction will deliver positive results. As far as cost saving, I filled her today with a few gallons of fresh E85. The cost, $2.09. Had I filled her with Shell V-Power, which is my fuel of choice. It would have cost me $3.25. The system is already paying for itself.
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  #39  
Old 03-05-2021, 06:40 PM
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The payback is not the difference in price. Ethanol has less energy per gallon which results in less miles per gallon. It ranges from about 25 to 40 percent based on the ethanol content. That translates to 20 to 40 percent more gallons needed to go the same number of miles as gasoline. In addition, the example you used assumes the price gap will remain constant. There may still be a payback but not as much as the example you used. However calculated it will fluctuate as the supply and demand changes.
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  #40  
Old 03-05-2021, 07:45 PM
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Drunken E53

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The payback is not the difference in price. Ethanol has less energy per gallon which results in less miles per gallon. It ranges from about 25 to 40 percent based on the ethanol content. That translates to 20 to 40 percent more gallons needed to go the same number of miles as gasoline. In addition, the example you used assumes the price gap will remain constant. There may still be a payback but not as much as the example you used. However calculated it will fluctuate as the supply and demand changes.

Yes, but also remember. I will not have to purchase as much Methanol that I did when I was on pump gas. As of right now the system is deactivated.

So when summertime comes upon us, and if Methanol is still not a necessity, then for me personally there will be a Savings. Shell V-Power and Methanol gets expensive.

At this point, it seems the Methanol will only be used when there is no access to Ethanol, only gasoline. Or, if there will be extreme conditions, which is a very rare occurrence for me.
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