[Carl Morris]

I'm partial to option 1, modified as needed for your mods and the amount of E85 you want to run. When you don't feel like (or can't) use E85, load a normal pump gas map.

Option 2 leaves a lot on the table IMO, and option 3 will work but isn't really necessary. Meth is a personal decision, but I'd prefer to avoid the extra complexity if possible.

[enrita]

Originally Posted by Manny_World

In preparation for moving out west where there is no 93 octane, which option do you think will be the best option for performance and fuel consumption?

1. Run the new e85 map with 91 octane mixed with e85.
2. Continue running Stg 2+ aggressive with 91/e85 mix.
3. Get a protune 91/e85 map.
4. Run e85 map with 91 octane and meth
5. Get a protune map for 91 octane and meth.

Thanks in advance.

I would try running the e85 race map on e40/e50 and 91 octane.
You would need of course to change scalar in atr.

[EJ_3]

Originally Posted by enrita

I would try running the e85 race map on e40/e50 and 91 octane.
You would need of course to change scalar in atr.

Originally Posted by Carl Morris

I'm partial to option 1, modified as needed for your mods and the amount of E85 you want to run. When you don't feel like (or can't) use E85, load a normal pump gas map.

Option 2 leaves a lot on the table IMO, and option 3 will work but isn't really necessary. Meth is a personal decision, but I'd prefer to avoid the extra complexity if possible.

Thank you both for your input.

[VNeBLOB42]

Originally Posted by Ænema

On a healthy fuel system 50% isn't a problem. If you have a weak link(usually a LPFP) then you may not be able to run that high of a mix. When properly tuned for it a 50% mix can yield some AMAZING gains, just look at Vneblob's PTF thread http://www.e90post.com/forums/showthread.php?t=746740

Hey man!,

Thanks for the recognition. Just now read it.

[0-60B4U]

Gilbert from **********s helped me with my purchase.

I love Cobb AP and me 335i coupe is a beast now.

Thank you Gilbert and **********s....you Are the BEST !!

[Schnitzel]

Originally Posted by enrita

Go etune ptf, my car goes like nuts now with e85 map.

Went etune pft. Unfortunately, the race code does not support my DME firmware (IJCOS) at the moment

Rob, please release that race code for more DME firmwares very soon.

Yes, I know, a software update can fix this problem but in my case an update isn't easy since I have several components (M3 cluster, CIC system,...) retrofitted and coded. In addition I have sold my old components. Therefore an update is not possible.

[Carl Morris]

If you have ATR for IJCOS I would think you could just adjust the fuel scalar and incorporate their timing map from the E30 release and it would be close enough.

[nikitino25]

I'm running stage one agressive + fmic right now and I've noticed that when I do a pull or even just put my foot into the gas some, when I let off the gas, my car will keep accelerating for a brief moment; it's like it overboosts briefly and keeps accelerating. Anybody know what causes this malady and how to fix it?

[Carl Morris]

I've noticed it, but my guess was that they let off slowly for emissions reasons and that there's no fix for it unless you can change that part of the code.

[I3ossman]

Originally Posted by Manny_World

In preparation for moving out west where there is no 93 octane, which option do you think will be the best option for performance and fuel consumption?

1. Run the new e85 map with 91 octane mixed with e85.
2. Continue running Stg 2+ aggressive with 91/e85 mix.
3. Get a protune 91/e85 map.
4. Run e85 map with 91 octane and meth
5. Get a protune map for 91 octane and meth.

Thanks in advance.

Speaking from experience and using what I learned on the dyno with my tuner, you can NOT beat a good protune for e50 (50 e85/50 9xoct). I can only imagine how good the results on a meth/e50 tune would be.. ultimate track setup. I can't bear driving my car on stg2 agg anymore when e85 isnt an option (its 25+miles away). When the difference is this significant (330whpish vs 450whp) it is a no brainer for me. As far as fuel consumption goes I have lost maybe 1.5mpg on the e50 map I have, however it is a very aggressive tune so if this is a concern for you i'm sure if you just tell your tuner your goals they can adjust accordingly to make sure its not a complete gas guzzler.

[VNeBLOB42]

Guys,

lets be clear, E50 is not 50/50 E85/93 or 91. E50 means 50% ethanol, like E30 means 30% ethanol.

to get E50 on a 16 gallon tank its more like 8.5 gallons of E85 and 7.5 gallons of Pump 91 or 93, based upon regular pump having E10.

50/50 - E85/9x Octane is more like E48.... just saying..

[Wedge1967]

Clearly you're still making an assumption because e85 is not always 85% and e10 is not always 10%. I filled my car last week with 15.5 gallons of e85 and my flex sensor was reading 79% Ethanol. Prior I was at 60%, so I had a very small % of 92 oct in my car at the time. Too little to drop the e85 from 85% to 79%. So to be clear, you'll never get 50/50, but does it really matter?

Originally Posted by VNeBLOB42

Guys,

lets be clear, E50 is not 50/50 E85/93 or 91. E50 means 50% ethanol, like E30 means 30% ethanol.

to get E50 on a 16 gallon tank its more like 8.5 gallons of E85 and 7.5 gallons of Pump 91 or 93, based upon regular pump having E10.

50/50 - E85/9x Octane is more like E48.... just saying..

[3-Serious]

Question guys, if I remember correctly I think I remember Cobb saying if I was protuned on an older map they could convert the map to the newer software. For example I was protuned on v401. Can they take my protune and convert it to the v402?

[EJ_3]

Originally Posted by I3ossman

Speaking from experience and using what I learned on the dyno with my tuner, you can NOT beat a good protune for e50 (50 e85/50 9xoct). I can only imagine how good the results on a meth/e50 tune would be.. ultimate track setup. I can't bear driving my car on stg2 agg anymore when e85 isnt an option (its 25+miles away). When the difference is this significant (330whpish vs 450whp) it is a no brainer for me. As far as fuel consumption goes I have lost maybe 1.5mpg on the e50 map I have, however it is a very aggressive tune so if this is a concern for you i'm sure if you just tell your tuner your goals they can adjust accordingly to make sure its not a complete gas guzzler.

Good info, I didn't know it would make that big of a jump, I was imagining maybe 30hp at the most. I put down 359 on the dyno with 93 octane, so if I go protune with E45 (E85/91) I should be hitting around 465hp?

Originally Posted by VNeBLOB42

Guys,

lets be clear, E50 is not 50/50 E85/93 or 91. E50 means 50% ethanol, like E30 means 30% ethanol.

to get E50 on a 16 gallon tank its more like 8.5 gallons of E85 and 7.5 gallons of Pump 91 or 93, based upon regular pump having E10.

50/50 - E85/9x Octane is more like E48.... just saying..

Make since, thanks for clarifying.

[VNeBLOB42]

Originally Posted by Wedge1967

Clearly you're still making an assumption because e85 is not always 85% and e10 is not always 10%. I filled my car last week with 15.5 gallons of e85 and my flex sensor was reading 79% Ethanol. Prior I was at 60%, so I had a very small % of 92 oct in my car at the time. Too little to drop the e85 from 85% to 79%. So to be clear, you'll never get 50/50, but does it really matter?

yes of course, its all based upon assumptions, especially because I don't have a sensor. They best I can do is make accurate assumptions as I can. My tune was based upon E50, even then it was started out too aggressive. Whether its E40, E50 or E45. Don't really know.

with a pro-tune, what matters is consistency, the tuner obviously tunes the car based upon the data and results, so E50, E48 can vary. So as long as I can do the best to make it consistent, and check data logs from time to time I should be fine. Once again i don't have the flex sensor to make adjustments.

But my comment was just being technical, E50 is not 50% E85 pump.

Just curious, which brand of E85 do you use? That is interesting that you are getting that much of inconsistency. thanks for sharing.

I use Propel Fuel @ Shell and they have some in the Cali Sac valley, Bay Area, So Cal and Washington. Its a high profile brand and I spoke with them before. They appear to be very consistent with the blends and they do not reduce the ethanol content during the winter months, so they say. But once again, its all based upon assumptions, E85, E80 and so on.

[Fully_Bolted]

Originally Posted by Manny_World

I put down 359 on the dyno with 93 octane, so if I go protune with E45 (E85/91) I should be hitting around 465hp?

No, expect 430 at the most. No offense to I3ossman, but his tuner is pumping out some outrageous numbers. I suspect that his dyno reads about 20whp more than a typical dynojet, which already read high as-is.

[Ænema]

Originally Posted by Fully_Bolted

No, expect 430 at the most. No offense to I3ossman, but his tuner is pumping out some outrageous numbers. I suspect that his dyno reads about 20whp more than a typical dynojet, which already read high as-is.

+1

It's not necessarily what numbers you make but what the gains are and how the car feels. Just my personal opinion but you shouldn't shooting for the moon on a stock car + e85. There is a reason bolt-ons are known as "supporting mods."

[enrita]

Originally Posted by Fully_Bolted

No, expect 430 at the most. No offense to I3ossman, but his tuner is pumping out some outrageous numbers. I suspect that his dyno reads about 20whp more than a typical dynojet, which already read high as-is.

+ 100, you need to be realistic...

[VNeBLOB42]

Hey guys,

I am sure its been done before,.,.,

if all goes well, i will be comparing my Dyno Dynamics results on a DynoJet tonight.

Max was 367 whp @ 394 wtq on a Dyno Dynamics
(keep in mind this run didn't have the proper cooling, just one large fan, not the super blower fans that are usually in front of the IC and Kidneys) I averaged 155 IAT's.

the DynoJet will have the proper cooling fans

if you haven't take a look at my post.

http://www.e90post.com/forums/showthread.php?t=746740

Hope to break 400 whp, we will see.......

stay tuned,

thanks Vince..

[EJ_3]

Originally Posted by Ænema

+1

It's not necessarily what numbers you make but what the gains are and how the car feels. Just my personal opinion but you shouldn't shooting for the moon on a stock car + e85. There is a reason bolt-ons are known as "supporting mods."

Shooting for the moon, maybe... in a stock car, no. The only other bolt-on I could do is an exhaust... which wouldn't give me much of a gain. So unless I find an AE exhaust for the right price, I'm done with bolt-ons.

[Ænema]

Originally Posted by Manny_World

Shooting for the moon, maybe... in a stock car, no. The only other bolt-on I could do is an exhaust... which wouldn't give me much of a gain. So unless I find an AE exhaust for the right price, I'm done with bolt-ons.

My bad I should've put in the disclaimer that j wasn't spefically talking about you. I was just speaking in general. FBO is the always the way to go IMO

[07335aw]

Apologize in advance. I'm a noobie when it comes to tuning.
I just purchased a cobb ap and I have an 07 335 completely stock
except for dci's.
What will be the best map to run?
I have no problem running 93 or 94 octane.
What will the powers gains be?

Thanks in advance for schooling me.