My Straight E85 N54 Dyno, No meth!

[wildcat767676]

I am running same mods as you but with addition of fmic and larger oil cooler and Meth. I just updated JB4 to work with e85 and ran 25% with 91 gas. It feels way stronger than with methanol!!! I did get some fuel cutting here and there though. Do you know if that's why you need booster pump?

Can meth spray with e85 or is it old news now to e85?

Can you run a track day on your e85 setup safely?

Thank you.

[flinchy]

Damn stock turbos

Still not possible to do 100% e85 even with current hpfp upgrades on upgraded turbos

Still, beastly numbers!!!

[kingh135]

Hi guys i am running a custom flash tune on my n54 135 and i have tried a 50/50 e85 /pump mix in my car, the car just starts to splutter alot in the low rpm feels very erratic at all times. I would love to get the feeling with e85 you guys talk about so often. How do we go about achieving that with a flash tune? any advise would be appreciated.
Thx guys

[Tommeh]

With the inline ethanol sensor can you run any type of gas mixture you want? Like you ran e85 till about a quarter than then drove somewhere that only had 93 and filled the rest?

[1911A145]

Nice Numbers. How long to you suppose the injectors last before gumming up? A couple other people on the forums have ran only a 30-40% mixture on a regular basis and their injectors, all 6, were gummed up by the third or fourth month. This has to be at least one the the concerns on your mind, no? Considering how much they cost for each injector.

[Tommeh]

I thought e85 ran a lot cleaner? What do you mean "Gumming up"?

[135Pats]

Originally Posted by 1911A145

Nice Numbers. How long to you suppose the injectors last before gumming up? A couple other people on the forums have ran only a 30-40% mixture on a regular basis and their injectors, all 6, were gummed up by the third or fourth month. This has to be at least one the the concerns on your mind, no? Considering how much they cost for each injector.

I only have my experience to go off of, but I’ve been running E30 since March with absolutely zero issues regarding injector rusting or related issues. I’ve been “flushing” the fuel and injection system with 93 pump once every month or so, so it’s not literally 100% E30 mixes. I think the key with E85 is to not let it sit, and flush it out of the car every now and then. It is a legitimate concern though, esp. if you’re running E85 like Dmacc. But at least anecdotally speaking, I’m not seeing many ethanol related issues on this platform, and obviously we’ve been pushing more and more E85 for quite some time now.

Originally Posted by Tommeh

I thought e85 ran a lot cleaner? What do you mean "Gumming up"?

It burns cleaner and cooler in-cylinder, that's not the concern here.

[1911A145]

Originally Posted by Tommeh

I thought e85 ran a lot cleaner? What do you mean "Gumming up"?

Originally Posted by 135Pats

I only have my experience to go off of, but I’ve been running E30 since March with absolutely zero issues regarding injector rusting or related issues. I’ve been “flushing” the fuel and injection system with 93 pump once every month or so, so it’s not literally 100% E30 mixes. I think the key with E85 is to not let it sit, and flush it out of the car every now and then. It is a legitimate concern though, esp. if you’re running E85 like Dmacc. But at least anecdotally speaking, I’m not seeing many ethanol related issues on this platform, and obviously we’ve been pushing more and more E85 for quite some time now.

It burns cleaner and cooler in-cylinder, that's not the concern here.

http://www.1addicts.com/forums/showt...jector+problem

[135Pats]

Originally Posted by 1911A145

http://www.1addicts.com/forums/showt...jector+problem

I remember that thread….Yea it’s certainly a legitimate concern, but again I think it can be largely mitigated by flushing the system with pump gas every now and then. If I were running 100% E85, I certainly wouldn’t want to let it sit for more than a few days between driving it. Interested to see if others have thoughts on this, because it’s not a problem that appears to be all that common. But it bears watching.

Edit: Shameless pat on the back for 2K posts!

[1911A145]

Originally Posted by 135Pats

I remember that thread….Yea it’s certainly a legitimate concern, but again I think it can be largely mitigated by flushing the system with pump gas every now and then. If I were running 100% E85, I certainly wouldn’t want to let it sit for more than a few days between driving it. Interested to see if others have thoughts on this, because it’s not a problem that appears to be all that common. But it bears watching.

Edit: Shameless pat on the back for 2K posts!

I run an E30 COBB Map that has been slightly tweeked. After 3 tankfulls straight my car started rough idleing and breaking up, up top. BMW couldnt figure it out. I replaced the LPFS and on a less powerful map I am not having an issue. But I have been running COBB Stage2+ for 1 year now trouble free. not a single issue. Now with E30, I seem to be running into issues. It's not the tune, because afterwards I switched back to the stage 2+ and the same problem.

New everything, including HPFP. I havnt tried the E30 map since, which its been a couple weeks, but I am just trying to see if this is a trending problem for us. I, too, run cleaners through 93oct. tank fulls to try and "clean" out the system. Hmmm..

Either way, E85 is the way to go if we as a community can get these problems worked out...

[135Pats]

Originally Posted by 1911A145

I run an E30 COBB Map that has been slightly tweeked. After 3 tankfulls straight my car started rough idleing and breaking up, up top. BMW couldnt figure it out. I replaced the LPFS and on a less powerful map I am not having an issue. But I have been running COBB Stage2+ for 1 year now trouble free. not a single issue. Now with E30, I seem to be running into issues. It's not the tune, because afterwards I switched back to the stage 2+ and the same problem.

New everything, including HPFP. I havnt tried the E30 map since, which its been a couple weeks, but I am just trying to see if this is a trending problem for us. I, too, run cleaners through 93oct. tank fulls to try and "clean" out the system. Hmmm..

Either way, E85 is the way to go if we as a community can get these problems worked out...

Totally agree on the pump gas OTS maps, they’re rock solid, and in my opinion quite conservative esp. with regards to advance. Getting back to ethanol, there’s no doubt that after a few tanks the car motor just starts to feel a bit “lazy”. No misfires, logs beautifully, but is def. a bit sluggish esp. when cold. I’ve never had it break up on me under WOT, at the same time I don’t go WOT more than once or twice a week, if that. When I run some 93 pump and then switch back, it’s a much crisper feel after adaptations etc. So there’s def. something there…believe Dmacc had a similar experience. Injectors clogging/rusting are my only real concern with E30-50, the fuel lines should be able to handle it no problem if it’s actually being used and not just sitting around. No question, it’s the way forward. High compression+turbos=octane hungry.

[Dmacc]

Originally Posted by 1911A145

Nice Numbers. How long to you suppose the injectors last before gumming up? A couple other people on the forums have ran only a 30-40% mixture on a regular basis and their injectors, all 6, were gummed up by the third or fourth month. This has to be at least one the the concerns on your mind, no? Considering how much they cost for each injector.

I noticed gumming usually after 5-6 tanks of straight e85. I will see an unsteady idle, as well as some surging of power in the rpm band. What 135Pats was mentioning about pump gas is exactly what I do. I will fill up with 1-2 tanks of 91 octane from chevron with techron to flush the injectors of all the gummy almost caramel like sticky substance. I then reset adaptations on pump gas, and next time I go to fill up with straight e85, all of my issues are gone, and the car runs just as smooth as it did on pump gas.

What I suggest is to check your lpfp psi by logging and if you find it is dipping below 50 psi, I would either back down the mix of e85, or consider upgrading/replacing the lpfp if you want to continue to run e85.

Also try running 2 tanks of pump gas through and resetting your adaptations, then run the e30 mix and see if that helps with your issues. I hope this info helps!

[Dmacc]

Originally Posted by Tommeh

With the inline ethanol sensor can you run any type of gas mixture you want? Like you ran e85 till about a quarter than then drove somewhere that only had 93 and filled the rest?

If you have an upgraded lpfp or are running the inline booster pump with the ethanol sensor, then yes, that's what I do! You also need to run the procedeflash as well for maximum control over fueling with the sensor.

I'll be on straight e85 say driving 60 miles to San Francisco, if I'm close to empty, or just have 1/4 tank left, I can just stop at any pump gas station and fill up, and the sensor will automatically adjust the tune, very simple, and leaves some ease at mind. The flexfuel kit is my favorite mod I've done to the car, besides my quaife diff

[TheAnalyst]

Originally Posted by Dmacc

... I then reset adaptations on pump gas, and next time I go to fill up with straight e85, all of my issues are gone, and the car runs just as smooth as it did on pump gas.

What do you mean adaptations? Is that something specific to the procede, something else you've added, or is it something universal to all 1ers running ethanol?

[Dmacc]

Originally Posted by TheAnalyst

What do you mean adaptations? Is that something specific to the procede, something else you've added, or is it something universal to all 1ers running ethanol?

Jb4, Cobb, and procede all have the ability to reset the dme adaptations. You can also use the Bavarian Technic tool to reset them as well.