[tc535i]

Just wondering if a 30% e85 mix with 91 would be enough to run map 7, or should I just leave it on map 2? Not really a fan of autotune maps.

Thanks!

[idrift4wd]

no way. i would go a 60/40 mix at least or 70/30 would be better. depending on if you mix with 91/93.

terry recommends an inline pump also if you're mixing e85 for map 7. If you have high e85 content, I have a feeling map 5 may suit your car better than map 2

[N3m3sis]

Map 5.

If you are not a fan of the autotune, make sure you are using it correctly. It needs 3 WOT pulls at a minimum to even be close to full potential. The dme keeps learning the whole time so will gradually keep getting fast.

[tc535i]

I've just seen autotune lean out and kill too many motors. I don't really want to run high e85 mixes or install an inline for now, so I'll just stick with map 2 and 91 unless I'm gonna dyno etc

[chili36]

I would really like to see examples of this claim.

Originally Posted by tc535i

I've just seen autotune lean out and kill too many motors.

[cialz]

Originally Posted by chili36

I would really like to see examples of this claim.

huh? really haven't really seen a tune kill any one that did proper maintenance...

but then I don't have a tune

[Stucks]

for map 7, you would need e60. for e60, you would need some sort of lpfp upgrade (450 lph drop in, 255 lph in line pump, ect).

[chili36]

Originally Posted by cialz

huh? really haven't really seen a tune kill any one that did proper maintenance...

but then I don't have a tune

Neither have I, as auto tune tends to be conservative.

Just giving OP a chance to back up what seems to be misinformation.

[tc535i]

I'm not really at liberty to tall about other people's issues, but I've seen seemingly strong cars put holes in the block, so I'm just erring on the side of caution. Eventually I'll probably have a custom tune made from my logs

[chili36]

Please don't spread misinformation unless you have substantial proof/data to back it up.

[Miko226]

Originally Posted by chili36

I would really like to see examples of this claim.

+1

[Myrder]

Originally Posted by tc535i

I've just seen autotune lean out and kill too many motors.

That's some false information right there. Autotune is very conservative. People putting holes in the block are the ones running way too much timing and turning off knock detection.

Please post some actual data, images, or refer the people who lost their motors to autotune here so we can hear more. I'm really curious...

[Jeff@TopGearSolutions]

Originally Posted by Myrder

That's some false information right there. Autotune is very conservative. People putting holes in the block are the ones running way too much timing and turning off knock detection.

Please post some actual data, images, or refer the people who lost their motors to autotune here so we can hear more. I'm really curious...

I'm curious as well and I've been following this platform since 2008.

I know of a few blown motor but most of them were not your typical full bolt on car and most cases were upgraded turbo's with methanol injection. The culprit to the blown motors appeared to rely heavily on the poor distribution of methanol among other reasons.

[Eat.Sleep.Race]

autotune ftw!

[tc535i]

Like I said, I've just had personal friends with bad experiences. Of course there are many variables, and I'm not trying to tell anybody else what to do; just saying I'd personally prefer a permanently tuned map than one with changing parameters.

[Myrder]

Originally Posted by tc535i

Like I said, I've just had personal friends with bad experiences. Of course there are many variables, and I'm not trying to tell anybody else what to do; just saying I'd personally prefer a permanently tuned map than one with changing parameters.

Post up pictures or receipts of work to fix these bad experiences. If they are personal friends this should be easy to provide.

I like auto-tune. It lowers boost if you are running lower octane. It actually makes it safer. Lets say you don't get the octane you normally get and are running a fixed map. Sounds like potential knock city. Auto-tune, just lowers boost and you are fine still.

Sorry, but you seem to be posting just unfounded opinions and not many of us care to hear it.

[tc535i]

Originally Posted by Myrder

Post up pictures or receipts of work to fix these bad experiences. If they are personal friends this should be easy to provide.

I like auto-tune. It lowers boost if you are running lower octane. It actually makes it safer. Lets say you don't get the octane you normally get and are running a fixed map. Sounds like potential knock city. Auto-tune, just lowers boost and you are fine still.

Sorry, but you seem to be posting just unfounded opinions and not many of us care to hear it.

yeah, I'm gonna go ask him for pictures of his block so I can post them on an internet board, to prove a point I'm not even trying to make.

Knock city? Only if your sensors aren't working, but if you're putting in low octane gas I don't wanna know wtf else you're doing to your car. And if you're doing 3 hard pulls on shit gas in 3rd to calibrate it instead of driving the car as easily as possible, or changing to a low boost map, etc etc... you probably shouldn't own anything nicer than a Civic.

like I said, I really don't care if you hear it or not. close the window, walk away. I'm asking a different question, everybody else is getting hung up on trying to prove autotune to me.

[Myrder]

Originally Posted by tc535i

yeah, I'm gonna go ask him for pictures of his block so I can post them on an internet board, to prove a point I'm not even trying to make.

Knock city? Only if your sensors aren't working, but if you're putting in low octane gas I don't wanna know wtf else you're doing to your car. And if you're doing 3 hard pulls on shit gas in 3rd to calibrate it instead of driving the car as easily as possible, or changing to a low boost map, etc etc... you probably shouldn't own anything nicer than a Civic.

like I said, I really don't care if you hear it or not. close the window, walk away. I'm asking a different question, everybody else is getting hung up on trying to prove autotune to me.

You haven't asked a question. You clearly aren't too knowledgeable running Map 2 on 91oct. You talk about not wanting to run high ethanol mixtures and so on, but want to push the car hard? You sound like you will be following your friends path real soon. You sound new to the n54 world. Auto-tune does not start at 18psi, when doing adaptation pulls, it starts lower and gets progressively higher if your octane can support it.

I wouldn't worry about what I own. You come off as very defensive and ignorant when people ask for simple proof. Have fun with your car.

[tc535i]

Originally Posted by Myrder

You haven't asked a question. You clearly aren't too knowledgeable running Map 2 on 91oct. You talk about not wanting to run high ethanol mixtures and so on, but want to push the car hard? You sound like you will be following your friends path real soon. You sound new to the n54 world. Auto-tune does not start at 18psi, when doing adaptation pulls, it starts lower and gets progressively higher if your octane can support it.

I wouldn't worry about what I own. You come off as very defensive and ignorant when people ask for simple proof. Have fun with your car.

The question is the first post, not all that confusing

and thanks for more map 5 info, I really appreciate all the education

[Myrder]

Originally Posted by tc535i

The question is the first post, not all that confusing

and thanks for more map 5 info, I really appreciate all the education

I'll answer your question.

Map 7 requires 100oct minimum.

Your inital proposed mixture of 30% is 95.2oct. Given you measure your E85 and its actually true E85. Most I measure are 80-82.

So no you shouldn't run map 7 on that.

10gal of E85 would yield 99.5oct.


Here you go, http://www.intercepteft.com/calc.html for future use.

[tc535i]

thanks, that's a useful calculator

I assume e85 true content is based on freshness, water accumulation over time etc? Or do some refineries ship "e85" with a lower true content from the factory?

[Myrder]

Originally Posted by tc535i

thanks, that's a useful calculator

I assume e85 true content is based on freshness, water accumulation over time etc? Or do some refineries ship "e85" with a lower true content from the factory?

It's that there are acceptable tolerances of how far the % can be off, as well as season changes, winter blends can be as low as E70. Search E85 tester, you can make one out of a vial or graduated cylinder. I use a centrifuge vial to measure my stations E85.

I would consider an inline. I will be putting one in this month. It's cheap insurance as some pumps even struggle at E30 blends. Also it's an easy install.