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E85 flex fuel experiences

 
Old 06-10-2019, 03:04 PM
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E85 flex fuel experiences

Starting a dedicated thread for anybody who is interested in running E85 on their M156.

Originally Posted by skratch77 View Post
I only ran it for a day, was getting random miss fires and running too rich.
Originally Posted by PeterA90 View Post
Car running better now?
Originally Posted by skratch77 View Post
I have up on the e85 kit. The injectors I had are 630cc and not 550 like I thought. I was getting negative 40 fuel trims and just gave up and took the kit off
Originally Posted by skratch77 View Post
I bought the kit used with injectors. It's called eflexfuel kit and looks exactly like vrp kit
Originally Posted by hachiroku View Post
with a requirement of 25-35% fuel flow rate you'll need more than a 550cc injector. what injectors were they?

edit: saw your other post.

my response, "i have the same kit and injectors...also OE Tune...should have the kit installed today or tomorrow. can report back with my fuel trims. my car prior to this kit was +15 long term trims."
Originally Posted by skratch77 View Post
What part number you got on your injectors. Dont forget when you are not on e85 that 630cc is major overkill
Originally Posted by hachiroku View Post
trims are all over the place, drivability is fine so far. ECU is still adapting...these photos are from the flex fuel kit with bigger injectors on 91 octane and OE 91 octane map. filled up from 1/4 tank with E85....car is sooooooo fast. hahahahahaha I love it.

also installed unmodified airboxes and new filters. throttle response is more accurate now. can't say it's faster or slower with unmodified airboxes but throttle response is better.

edit: after a bit more driving, drivability improved greatly and trims look much better. car and engine are real fast on OE's tune after the ECU made adjustments to the larger injectors.





Originally Posted by PeterA90 View Post
Any misfires? How’s it run on full e? Did you retune for those injectors?
Originally Posted by hachiroku View Post
no misfires, only upon first start with new kit, it was missing horribly. i reset my ecu to jump start the ECU to begin trim adjustments...idle isn't always the best and can hunt at times, but isn't unbearable. no retune, ECU can adjust trims for the most part. won't be perfect, but it works.

runs great...anything more than 20% throttle with current mixture of E60 feels awesome and easily on a 91 octane tune is making 15-25hp more.

edit: after a bit more driving, all previous reported issues are gone. engine runs great and drivability is better than ever. trims look good as well for running larger injectors.
Originally Posted by PayKoHan View Post
Using this topic now, think is suitable.

2 days ago i was on dyno and the car got 555Ps and 680Nm @ 24temp., i think this is a bit too high with my mods, or is that possible? And is the afr (pic) good?

Mods: primar cats removed, agency pulley, E85 kit and map from EC (no E85 map, cuz stock injectors but very aggressive map, E60+ is suggested ). Stock wheels 18" and is a estate 2012 mct.
The new c63s stock limo. is slower in a race. i drive now 7,8-8,1 100-200km/h.

Originally Posted by hachiroku View Post
whats your injector duty cycle with the stock injectors? with the 600cc's i'm waaaaaaay safe. haven't monitored til redline, but i'd assume its still way below 80%

Last edited by hachiroku; 06-11-2019 at 01:07 PM.
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Old 06-10-2019, 03:30 PM
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Does anyone know what adapters we need on Ebay to connect stock wires to these injectors?

I'm going to have a dedicated e85 tune with bigger injectors.
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Old 06-10-2019, 04:09 PM
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You'll need EV1 connectors, they're cheap on Amazon, and qualify for prime...will you be reaching out to OE for a custom tune?

and update for me...today ambient air temps are 74-79F...my long term trims are closer to zero at -7 and -15....short term trims are 0 to -2...so we're right on the mark. yesterday it was much cooler.

Last edited by hachiroku; 06-10-2019 at 04:12 PM.
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Old 06-10-2019, 04:18 PM
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if you're going to have a dedicated E85 tune without use of flex fuel computer...i'd highly advise against this...from pump to pump you cannot guarantee the quality of fuel and you'd be setting yourself up for issues. i have a friend who blew his B8.5 Audi S4 engine running a dedicated E85 tune without flex fuel computer. Additionally ethanol absorbs water from the air, which makes it risky.
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Old 06-10-2019, 05:31 PM
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whats your injector duty cycle with the stock injectors? with the 600cc's i'm waaaaaaay safe. haven't monitored til redline, but i'd assume its still way below 80%
with 100% e85 (e76) i had 95% at redline.
now im using 75% e85 (e60-65) and is around 80%
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Old 06-10-2019, 05:42 PM
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yikes....cool...glad I upgraded my injectors then.
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Old 06-10-2019, 06:09 PM
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Originally Posted by hachiroku View Post
if you're going to have a dedicated E85 tune without use of flex fuel computer...i'd highly advise against this...from pump to pump you cannot guarantee the quality of fuel and you'd be setting yourself up for issues. i have a friend who blew his B8.5 Audi S4 engine running a dedicated E85 tune without flex fuel computer. Additionally ethanol absorbs water from the air, which makes it risky.
I'm using c85 for fuel. There is only one e85 station in my area and it's a hour drive
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Old 06-10-2019, 06:11 PM
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Originally Posted by PayKoHan View Post
with 100% e85 (e76) i had 95% at redline.
now im using 75% e85 (e60-65) and is around 80%
Stop using straight e85. You must want burn a piston... Upgrade injectors. Drop e content to e30-40 until you upgrade
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Old 06-10-2019, 06:23 PM
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Originally Posted by hachiroku View Post
You'll need EV1 connectors, they're cheap on Amazon, and qualify for prime...will you be reaching out to OE for a custom tune?

and update for me...today ambient air temps are 74-79F...my long term trims are closer to zero at -7 and -15....short term trims are 0 to -2...so we're right on the mark. yesterday it was much cooler.
Do you know what the stock car uses to make it plug and pay without cutting factory connectors

Will this work

https://www.amazon.com/dp/B074F3JJ3J/ref=cm_sw_r_other_apa_i_GJT.CbB0NJS0Q

Last edited by skratch77; 06-10-2019 at 06:26 PM.
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Old 06-10-2019, 06:24 PM
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Originally Posted by PeterA90 View Post
Stop using straight e85. You must want burn a piston... Upgrade injectors. Drop e content to e30-40 until you upgrade
Hmmm, you think my car running lean?
Everyone told my i can run e85 with stock injectors without headers 😣
did you saw my dyno and the lambda? Thought this afr is good.
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Old 06-10-2019, 06:34 PM
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I thought VRPSpeed will sell you the necessary harnesses? I think you gotta make your own b/c I was told by 5-0 motorsport that connection is "proprietary" from Bosh to AMG...
https://mbworld.org/forums/c63-amg-w...ml#post7453021
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Old 06-10-2019, 06:35 PM
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Originally Posted by PayKoHan View Post
Hmmm, you think my car running lean?
Everyone told my i can run e85 with stock injectors without headers 😣
did you saw my dyno and the lambda? Thought this afr is good.
Rut roh, I don't have headers either and run E85. Company line from AFD and EC ATX is that "we took the guess work out of it that's why our app doesn't show duty cycle"...
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Old 06-10-2019, 06:43 PM
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Originally Posted by PayKoHan View Post
Hmmm, you think my car running lean?
Everyone told my i can run e85 with stock injectors without headers 😣
did you saw my dyno and the lambda? Thought this afr is good.
Your stressing out the stock injectors. They shouldnít be over 80% at wot. At that rate your going to burn them out. Your fully Catless now. Doesnít matter headers or not
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Old 06-10-2019, 06:46 PM
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Old 06-10-2019, 06:53 PM
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Originally Posted by PeterA90 View Post
Your stressing out the stock injectors. They shouldn’t be over 80% at wot. At that rate your going to burn them out. Your fully Catless now. Doesn’t matter headers or not
Ye, if they burn out. But for now everything works fine and car runs clean ^^ im searching for bigger injectors but dont know which to buy...550 or bigger.

Last edited by PayKoHan; 06-10-2019 at 06:56 PM.
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Old 06-10-2019, 06:55 PM
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Originally Posted by PayKoHan View Post
Ye, if they burn out. But for now everything works fine and car runs clean ^^ im searching for bigger injectors but dont know which to buy...550 oder bigger.
I might sell mine if my kit dont sell. Honestly the amount of time I have put into my car trying to run right is making me just say f it and run race gas like I've always run.
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Old 06-10-2019, 07:02 PM
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Originally Posted by PayKoHan View Post
Ye, if they burn out. But for now everything works fine and car runs clean ^^ im searching for bigger injectors but dont know which to buy...550 or bigger.
https://www.fiveo-racing.com/collect...18665657794658

these are the correct injectors. EV-1 style

600cc is what you need for N/A application.

Last edited by PeterA90; 06-10-2019 at 07:05 PM.
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Old 06-10-2019, 07:07 PM
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Originally Posted by skratch77 View Post
I might sell mine if my kit dont sell. Honestly the amount of time I have put into my car trying to run right is making me just say f it and run race gas like I've always run.
Youre on stock exhaust from what I remember. You donít need injectors. Just run stock injectors with kit. Whatís your mods again?
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Old 06-10-2019, 07:21 PM
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Originally Posted by skratch77 View Post
Do you know what the stock car uses to make it plug and pay without cutting factory connectors

Will this work

https://www.amazon.com/dp/B074F3JJ3J..._GJT.CbB0NJS0Q
you won't be able to find a solution like that, but you can build an adapter harness using the parts below. For ease of use, you may want to look for shorter EV1 connectors than the one's I have listed here. The ones I have listed barely fit under the fuel rail. I rotated the injectors to the side to clip them in, then rotated back to center. I don't believe TE sells direct to consumers, so you'll have have to search online for who offers these. Amazon has them and eBay. Shop around and confirm the retailer actually can fill the order. I ordered pins on Amazon. For anybody who has a flexfuel kit, they came with 10 of the plugs so you might be able to source 4 pairs from folks the forums as they'll have no need for them.

I have pins if you need as I ordered 50 because I cut off the wrong end during my initial install.

Connector to OEM harness. PN# 1-1703498-1
https://www.te.com/usa-en/product-1-1703498-1.html
Pins for Connector. PN# 1718760-3
https://www.te.com/usa-en/product-1718760-3.html

EV1 Connector Kit
Amazon Amazon

Last edited by hachiroku; 06-11-2019 at 02:51 PM.
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Old 06-10-2019, 07:29 PM
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Originally Posted by PeterA90 View Post
Youre on stock exhaust from what I remember. You donít need injectors. Just run stock injectors with kit. Whatís your mods again?
The kit I got is hard wired for the 600cc injectors so I would need to change the adapters on the harness it came with.

Right now I'm carbon intake,82mm TB second cat delete. Made 460whp on ms100.

Here is the injector I have. Not really sure what it is because tuners use 997 injectors and some off the shelf Bosch a d wont share part numbers with anyone.


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Old 06-10-2019, 07:41 PM
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Originally Posted by hachiroku View Post
you won't be able to find a solution like that, but you can build an adapter harness using the parts below. For ease of use, you may want to look for shorter EV1 connectors than the one's I have listed here. The ones I have listed barely fit under the fuel rail. I rotated the injectors to the side to clip them in, then rotated back to center. I don't believe TE sells direct to consumers, so you'll have have to search online for who offers these. Amazon has them and eBay. Shop around and confirm the retailer actually can fill the order. I ordered pins on Amazon. For anybody who has a flexfuel kit, they came with 10 of the plugs so you might be able to source 4 pairs from folks the forums as they'll have no need for them.

Connector to OEM harness. PN# 1-1703498-1
https://www.te.com/usa-en/product-1-1703498-1.html
Pins for Connector. PN# 1718760-3
https://www.te.com/usa-en/product-1718760-3.html

EV1 Connector Kit
https://www.amazon.com/gp/product/B07C7QSQBY/
Thank you! I looked for those everywhere to make my own kit instead of paying 200 bucks to a tuner.

Where did you put the temp sensor for the kit? I left mine near the fuel rail but was getting insane temps on the app and I think it was dumping to much fuel because of it.

Last edited by skratch77; 06-10-2019 at 07:43 PM.
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Old 06-10-2019, 07:57 PM
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Originally Posted by skratch77 View Post
The kit I got is hard wired for the 600cc injectors so I would need to change the adapters on the harness it came with.

Right now I'm carbon intake,82mm TB second cat delete. Made 460whp on ms100.

Here is the injector I have. Not really sure what it is because tuners use 997 injectors and some off the shelf Bosch a d wont share part numbers with anyone.

Yeah donít need those injectors you still have your primary cats in. Sell those injectors and change kit to plug and play for stock injectors. You wonít be misfiring anymore. Unless your harness is messed up.. or the box... to many variables. These plug and play kits are cheap jb4 style crap...
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Old 06-10-2019, 08:47 PM
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Originally Posted by skratch77 View Post
The kit I got is hard wired for the 600cc injectors so I would need to change the adapters on the harness it came with.

Right now I'm carbon intake,82mm TB second cat delete. Made 460whp on ms100.

Here is the injector I have. Not really sure what it is because tuners use 997 injectors and some off the shelf Bosch a d wont share part numbers with anyone.

same injector I am running just different part revision. it's the 997 Turbo injector
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Old 06-10-2019, 09:18 PM
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Iím running an EFlexfuel kit with Bosch 550cc (#62379) with EV to MLK adapters (from finjector.com) with EC V7 tuned for 91 octane for about 6 months (8500miles)
Been filling up with full E85 since the conversion, havenít switched back to pump yet.
App reading about 75-80% ethanol consistently per fill up
LTFTs for me are floating around -15 to -17
Injector duty cycle maxing out around 72%

Mods are full cat deletes, resonator delete, double X-pipe, k&n drop in filters and lightweight battery (odyssey PC925)

Power gained in the midrange is very noticeable!
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Old 06-10-2019, 09:35 PM
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2007 Mercedes E63 AMG Pano, 2002 Audi A4 1.8t
Flow rates @ 43.5 psi / 3 bar
56.8 lb per hour
429.2 G per min. (N-Heptane)
596.9 cc per min


12,00 Ohm resistance


Bosch # 0280158123 / 62379

Midrange is the most noticable area where power has been gained. Lost 5-7 mpg across the board though at E60 mixture...2nd tank is registering E75.




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