How to e85

[sallyspeed3]

Originally Posted by phate Bolt ons beyond intake and downpipe are a waste with a K04 on E85, once properly tuned. Just go 5050, tune, and call it a day.

What about meth? I'm hoping its pointless cause thats the whole point of me using e85. Don't have the money for a kit but can't stand how sluggish my car is in this heat.

[phate]

Originally Posted by sallyspeed3 What about meth? I'm hoping its pointless cause thats the whole point of me using e85. Don't have the money for a kit but can't stand how sluggish my car is in this heat.

Ethanol direct injection is far more effective, and easier, and simpler, and cheaper

[Speeden6]

@phate

do you think a FMIC will make a difference with E85 for more aggressive tuning? or should i stay ETS TMIC? want to keep my BAT's low. also, do you know or think a FMIC over TMIC would be more beneficial running on BNR S3 + E85?

[phate]

Originally Posted by Speeden6 @phate do you think a FMIC will make a difference with E85 for more aggressive tuning? or should i stay ETS TMIC? want to keep my BAT's low. also, do you know or think a FMIC over TMIC would be more beneficial running on BNR S3 + E85?

On the K04, no.

If you go after market with the S3, I would just go front mount. I suspect the stock top mount will become a restriction just beyond what the K04 can support. I recently worked with an S3/stock top mount and wasn't terribly pleased with the results. Top mounts are still prone to heat soak.

[Speeden6]

running aftermarket TMIC but still yeah, heat soak is a bad problem! just hard to justify the FMIC if i am not sure if i am going BT. so guess i hold and get one if i go BT.

[Enki]

It doesn't matter what kind of pre-cylinder setup you run; large quantities of E in the tank will cause boost pressure drop due to the sheer volume of air that gets sucked in due to the cooling effect.
Basically, once you max the turbo (which you don't really even need E for), adding more boltons won't net you more airflow; running ethanol will only let you max the turbo with fewer boltons than you would otherwise require to see the same airflow without E (volts at the MAF).

[sallyspeed3]

so you're saying I'll see fewer gains with E since I'm already fully bolted whereas someone who just has intake/downpipe will get more benefit?

[phate]

Originally Posted by sallyspeed3 so you're saying I'll see fewer gains with E since I'm already fully bolted whereas someone who just has intake/downpipe will get more benefit?

Something like that.

On gas, you might see a gain from each bolt on. But, you would just be approaching what you could do with intake/dp/E85.

E85 is the shortcut to maxing out the K04 without worry of BAT's, AND being able to run max timing, lololol.

It truly is a case of having your cake and eating it

[sallyspeed3]

Well thats awesome, I can't wait to get the 1st map from bucker.

[Speeden6]

In all the mentions here about bolt ons not beeing needed and just intake / DP I think we keep overlooking HPFP internals! weather they be upgraded which is best or be replacement stock as the E85 helps gum them up if they have high millage on them doesnt it?

[Enki]

Originally Posted by phate E85 is the shortcut to maxing out the K04 without worry of BAT's, AND being able to run max timing, lololol. It truly is a case of having your cake and eating it

I hope more people take this to heart and understand that it really *IS* this awesome of a fuel.

[Speeden6]

Can I just say I LOVE E85!!!!!!

Screen shot attached, 1.5 Map was of no E85. the other is tuned with E85! Freaking LOVE THIS STUFF!

[sallyspeed3]

Just got my 1st revision from Bucker. Absolutely loving this shit. My car feels like it did back in the winter when my bats were 60 degrees cooler. Can't wait to see what else he can get out of it.

@Bucker

[Speeden6]

hitting the Dyno today for the real deal! got the E85 mixed right and fresh tune from @Lex COME ON 300AWHP!

[Mfinlay04]

Originally Posted by shadesofgray19 Now that ATR has a scaler we should use that instead of adjusting MAF cal for E85 correct? I'm running equivalent E20 and changed and increased my MAF by 6%. I think I should undo that and just use the scalers.

Can anyone comment on this? Wondering the same thing

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[phate]

Either method will work fine.

[Mfinlay04]

http://blogs.cobbtuning.com/2012/03/...for-big-power/

Thanks Phate. So I should just use the scalar and density to get me started and then slowly up timing and boost for more power correct?!

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[phate]

Originally Posted by Mfinlay04 http://blogs.cobbtuning.com/2012/03/...for-big-power/ Thanks Phate. So I should just use the scalar and density to get me started and then slowly up timing and boost for more power correct?! Sent from my Galaxy Nexus using Tapatalk 2

Yeah, use the scalars to set up for the mix. You will still need a MAF Cal, though it is likely to be only minor changes. From there it's normal tuning.

[Mfinlay04]

Originally Posted by phate Yeah, use the scalars to set up for the mix. You will still need a MAF Cal, though it is likely to be only minor changes. From there it's normal tuning.

Beautiful. Thanks for clarifying for me. Gonna try my first 50/50 tank today and see how she runs.:thumbup:

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[buckeyepost]

Finally got my 3 gallon E85 mix tune finished up and my car pulls for DAYS! And I told him I didn't want to get real aggressive with the tune since I was already pleased with it, it's got 93k miles on it and it's my DD. It truely is amazing at what you can do with just 3 gallons per tank of E. Guess I'll be tires a lot more often now. Can't wait to get her out at mid-Ohio next month and show my buddy's Suby what's up!
Thanks Jason/Dizzy!

[sidekick]

So if we adjust the SFG and the injector scalar, we should just leave the AFRs as they are right?

[Enki]

SFG and scalar are the ONLY changes. That's why this thread is so important to those on corn.

[sallyspeed3]

car is extremely happy running 4 gallons of Eth. Averaged around 34 mpgs driving into the city today and VD shows around 320 to the wheels. Fuck hybrids.

[mr.speedy3]

This is an interesting thread... I'll share my corn story in the weeks to come, converting next Friday .

[Vegasspeeed]

Man I really want to join in on the experience but I have no clue how to tune for e85 nor do I know anyone out here that can help but I have everything needed to start converting. Any kind of advice or point me to someone that can help me make a street tune would be awesome!

[Enki]

There are plenty of e-tuners here that can do the tuning for you. Hell, if you asked nicely they might even train you.

[Azspeed]

I am sold on e85 can't wait to get a tune. This thread has been a real help

[Printman]

After changing gravity and scaler will I need to let the ECU learn trims with the maf curve from a previous map where it was dailed in with a maf cal?

[sidekick]

Originally Posted by Printman After changing gravity and scaler will I need to let the ECU learn trims with the maf curve from a previous map where it was dailed in with a maf cal?

You may need to adjust the MAF calibration, but it isn't always necessary. Just keep an eye on your LTFTs after making the switch.

[Printman]

Originally Posted by sidekick You may need to adjust the MAF calibration, but it isn't always necessary. Just keep an eye on your LTFTs after making the switch.

Thanks, Trims look good I must have scaled it correctly on my 20% mix. Just did a 3rd gear pull with an aggressive 93 map I had with the inj. scaler and gravity adjusted and no KR. I am loving just a taste of Ethenol. I never felt the potential of that map because always had KR 4,000 + and it would just pull timing and richen my AFR. now to work on the tune a little and see just what I can do with such a small percentage of E then move towards a 40% goal.

Thanks for all the info throughout the E85 fueling database, you guys are great.

[Mfinlay04]

Haven't seen it mentioned in any E85 thread that I've read, but how important is runner a step colder plugs with e85? Since it's a slower burn does one still need to a step colder plugs?

[Enki]

Should read a bit more. Running colder plugs on full e causes that not so fresh feeling under boost.

[Mfinlay04]

Originally Posted by Enki Should read a bit more. Running colder plugs on full e causes that not so fresh feeling under boost.

To be fair it makes sense that we would need colder plugs with e85 bit I've never site it on this site and I've read quiet a bit and searched for 30+ mins this week looking for some definitive answers. On other platforms people have even ran 1 step HOTTER plugs with e85 and e85 mixing with good/better results. Has anyone experimented with this on the MS platform?

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[phate]

We covered it a few times in the main E85 thread.

[mariomspeed]

what is everones opinion on how harsh e85 is on the motor/stock clutch? i understand the fuel pump issues and when i do e85 ill be doing a 3 galloin blend so im not that worried about it plus i will run 93 daily and E for fun

[Mfinlay04]

Originally Posted by phate We covered it a few times in the main E85 thread.

Thanks @phate; didn't think about looking in the lubrication thread

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[navyspeed3]

Is anyone running straight E85? I haven't seen someone mentioning running just straight E85. I also thought someone mentioned a E85 fuel pump coming out for the car.

[ABolewski]

Originally Posted by navyspeed3 Is anyone running straight E85? I haven't seen someone mentioning running just straight E85. I also thought someone mentioned a E85 fuel pump coming out for the car.

@phate; is. And I believe the general consensus was that the E-85 specific pump was bull shit, and you don't need it. Although I have read that even on a k04 you will run out of fuel on 100% E which means you need some form of port injection (5th port or one of the new JMF mani's).
I plan on running strait E pretty soon here myself.

[phate]

This thread covers about 99% of the questions about E85:

E85 Discussion - HPFP lubrication and Flow issues

[silvapain]

Originally Posted by navyspeed3 Is anyone running straight E85? I haven't seen someone mentioning running just straight E85. I also thought someone mentioned a E85 fuel pump coming out for the car.

The HPFP spill valve will gun up and stick on 100% E85, and the performance benefits of 100% E85 over a 50/50 mix with 93 pump gas are minimal.