E85 flex fuel experiences
 

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

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.

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.

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.

with 100% e85 (e76) i had 95% at redline.
now im using 75% e85 (e60-65) and is around 80%

yikes....cool...glad I upgraded my injectors then.

I'm using c85 for fuel. There is only one e85 station in my area and it's a hour drive

Stop using straight e85. You must want burn a piston... Upgrade injectors. Drop e content to e30-40 until you upgrade

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

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.

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

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"...

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.

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.

https://www.fiveo-racing.com/collect...18665657794658

these are the correct injectors. EV-1 style

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

Youre on stock exhaust from what I remember. You don’t need injectors. Just run stock injectors with kit. What’s your mods again?

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

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.

https://cimg8.ibsrv.net/gimg/www.mbw...39f848ab96.jpg

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.

Yeah don’t need those injectors you still have your primary cats in. Sell those injectors and change kit to plug and play for stock injectors. You won’t 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...

same injector I am running just different part revision. it's the 997 Turbo injector

I’m 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, haven’t 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!

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.
​


https://cimg5.ibsrv.net/gimg/www.mbw...e6e0008bb3.jpg