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#31
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Drunken E53
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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. Anytime!
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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53 |
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#32
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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53 |
#33
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I brought up the ethanol content by another 15%. 20% more to go.
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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53 |
#34
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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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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas Last edited by bcredliner; 02-23-2021 at 04:47 PM. |
#35
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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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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53 |
#36
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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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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53 |
#37
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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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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
#38
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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53 |
#39
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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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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas Last edited by bcredliner; 03-05-2021 at 06:47 PM. |
#40
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Drunken E53
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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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02 BMW 5 Speed Supercharged Ethanol Burnin Meth Injected E53 |
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