The Maestro Community E85 Project

[derrek]

hahaha yeah I was looking at that. under 2 bar lol.

Some questions. Do you know exactly what Acceleration enrichment does?

Also, what PWM compatible pumps do you recommend that I can mod in while still retaining anti surge?
RS4 controller?

If I was doing it all over again I'd get the the torqbyte lpfp controller and run the ttrs pump when you run out of that add a in tank pump along side the the stock pump. PM me for more details.


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[StatusQuo]

Rs4 controller or torquebyte with a ttrs.
Heck if you want to just keep things low cost replace the stock lpfp and run aprs unvi inline pump setup

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The lpfp I have is new. I just replaced it two months ago along with the fuel filter.

I saw the apr inline pump but does that replace the factory pump controller? I see it uses a pump ecu as they describe.




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[StatusQuo]

Anyone know how I can add more fuel during the cold crank? I was thinking this is Warmup Fuel correction but on 100% e85, cold starts take a good min.

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[StatusQuo]

Update: I went back to 50/50 mix with e85 and gas. Doing 87 octane with the e85 this time.

I personally like this mix. Way better mpg than full e85

The main reason why I went back is because I couldn't figure out how to add fuel during cold crank. Cold starts were a total pain.

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[Okedokey]

Keep it up mate, good work. What about 93+E85?

[derrek]

Update: I went back to 50/50 mix with e85 and gas. Doing 87 octane with the e85 this time.

I personally like this mix. Way better mpg than full e85

The main reason why I went back is because I couldn't figure out how to add fuel during cold crank. Cold starts were a total pain.

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You'll see better performance when mixing with 91/93 over 87. Also use this calculator for when you mix fuels. Remember pump gas is 10% ethanol unless otherwise noted. Also probably wanna look in to one of these testers too.

http://www.intercepteft.com/calc.html

http://www.fuel-it.biz/ethanol-testers/


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[Okedokey]

Or just use a flex sensor?

[StatusQuo]

You'll see better performance when mixing with 91/93 over 87. Also use this calculator for when you mix fuels. Remember pump gas is 10% ethanol unless otherwise noted. Also probably wanna look in to one of these testers too.

http://www.intercepteft.com/calc.html

http://www.fuel-it.biz/ethanol-testers/


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Or just use a flex sensor?

I would love to be able to use a flex sensor that didnt interfere with eurodyne. You know if such a thing exists?




Derrek - Yeah I used the calculator and the 50/50 mix with 87 yields an octane rating of 96. the tune commands 93. It sucks living in California where the access to good gas is limited. I did some quick logs and im not knocking any less when mixing 91 with it. so almost zero. But ill take your advice on the next few fillups. Id like to advance the timing a little in the high end to see if I can squeeze more power.

[derrek]

I would love to be able to use a flex sensor that didnt interfere with eurodyne. You know if such a thing exists?




Derrek - Yeah I used the calculator and the 50/50 mix with 87 yields an octane rating of 96. the tune commands 93. It sucks living in California where the access to good gas is limited. I did some quick logs and im not knocking any less when mixing 91 with it. so almost zero. But ill take your advice on the next few fillups. Id like to advance the timing a little in the high end to see if I can squeeze more power.

I know UM has added a ethanol sensor to the mk6 R. They tap into the canbus system but that about all I know on how they got it to work.


You're stock compression ratio right? What kind of timing are running?


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[seal66]

I would love to be able to use a flex sensor that didnt interfere with eurodyne. You know if such a thing exists?




Derrek - Yeah I used the calculator and the 50/50 mix with 87 yields an octane rating of 96. the tune commands 93. It sucks living in California where the access to good gas is limited. I did some quick logs and im not knocking any less when mixing 91 with it. so almost zero. But ill take your advice on the next few fillups. Id like to advance the timing a little in the high end to see if I can squeeze more power.

Yes the flex fuel sensor exist. I run it on my b7 from UM. Makes it so much easier when I can't find e85 stations and I can just fuel with 91 and it adjust the mapping while the ethanol % drops

[Okedokey]

Yes the flex fuel sensor exist. I run it on my b7 from UM. Makes it so much easier when I can't find e85 stations and I can just fuel with 91 and it adjust the mapping while the ethanol % drops

Details pls?

[seal66]

Details pls?

Can't really give a whole lot of details man. All the tuning was done by UM since its their sniffer. Its nice to have cause my trip to vegas this year was nice over previous years. Didnt have to worry about pulling the laptop out to adjust fuel settings.

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[derrek]

Details pls?

What kind of details are you looking for? They add it via the canbus system and then they have to write a map for e85, e80, e75, e70, e65, etc. I'm not too familiar with winols but I'd assume that's what they use to tune. You'd have to find the maps in the huge hexadecimal hex dump then change them and find a way for it to select the map based off the ethanol content. Way easier said then done unless you really know what you're doing. I'm not sure this is something that can be done with maestro though.


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[Okedokey]

Anyone used Haltech ECUs?

[derrek]

Anyone used Haltech ECUs?

I have heard good things about those and the AEM Infinity ecus. Only problem I'd have with running one of those is how to pass emissions and running all the other stuff on the car. Best I could come up with is leaving the stock ecu to control everything but the engine and fuel system and running the standalone for engine and fuel system. Down side to all of that is cost.

[Okedokey]

So Im going to bump this...

How did we go ending up at a 50% mix? Id still like to do this.

[StatusQuo]

So Im going to bump this...

How did we go ending up at a 50% mix? Id still like to do this.

Yeah. I was able to use a 50% mix on stock injectors and PRV on custom-ish stage 2 eurodyne tune. No issues with maybe the exception of a little longer startup crank. (I couldn't figure out how to increase cranking fuel). 100% is borderline not possible. I was able to do it but I would max out the injector duty cycle and go limp once in a while. In my opinion the sweet spot as been 25%. You will get much of the knock resistance but not much more fuel required.

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[StatusQuo]

Hey. I just wanted to stop in and let everyone know that the thread hasn't been forgotten. However there will be no more development on the stock turbo ko3 now as I have now went big turbo. If you will be going e85 on stock turbo, I recommend only a max of 50% mix. Good gains on knock resistance with not much more fuel (if using 25% mix)

I have a 175bar prv on the way along with a RS4 fuel pump controller. I'll also be ordering RS4 injectors before I install everything.

I will be back but the e85 content will be big turbo+ supporting mods only. Plus I have learned quite a bit more info on how maestro works. I'll also go into detail on how to set up your big turbo from a base file.

GTX2867R + E85 with some good timing should be a real beast. I'm going for under 350tq as I'm on stock rods.

Right now I'm pushing stock injectors and everything. 17 psi on a GTX2867R. Not bad :D but it's running 91 only. No mix.

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[StatusQuo]

OKay so I seriously changed up the OP. The thread is not just e85 related now and is more general. I'm going to start explaining each map in depth more as time passes and give an example on how to edit them. I completely re explained the injector constant and now explain what it does instead of just how to tune it. it is the easiest setting to change so it was pretty easy to write.

Next time, I should be uploading what is Maximum VE and a method to tune this properly on the first try lol.

[canadianA4B7]

OKay so I seriously changed up the OP. The thread is not just e85 related now and is more general. I'm going to start explaining each map in depth more as time passes and give an example on how to edit them. I completely re explained the injector constant and now explain what it does instead of just how to tune it. it is the easiest setting to change so it was pretty easy to write.

Next time, I should be uploading what is Maximum VE and a method to tune this properly on the first try lol.

Ya some of us vets still lack the skills to tune. Give me a wrench a drill and some other tools I build u anything you need. But key board and computer screen leads me to the baseball section at the hardware store searching for the right slugger to deal with the PC!!!

Currently actually need some help with scaling the mag sensor as I feel it's not correct with the bigger intake manifold. That and well 50 other maestro things I have a huge lack of skills on!!

[p0isin]

I'm no expert but I can pitch in to help with definitions and let you know what I've tweaked in the past and what the results were. I keep alot of logs and have made nearly 200 revisions to my gtx file.

[james12lucy]

I'm no expert but I can pitch in to help with definitions and let you know what I've tweaked in the past and what the results were. I keep alot of logs and have made nearly 200 revisions to my gtx file.

I'm likely to lean on you and Canadian for my GTX tuning. He knows what it's going into, as I picked up his GTX2867R. I'll need a ton of help ensuring it'll have enough fuel in the 4500-7500RPM range (I'll also be running a similar meth and LPFP solution to Canadian, from Torqbyte). Since it's a track car, and it likely won't see anything below 4500RPM, I don't need to to behave like a daily.

[canadianA4B7]

Al3k was a huge help last night. Let him work some magic through the power of the inter web and got me running a hell of a lot better today. Some adjustments in the injector correction maps made huge improvements. Now one thing I notice is a slight bit of a miss or something on the low rpms, almost like the initial step on the peddle is far to alarming for the system and almost feels like it is hesitating to react. He also went over my MAXVe table and made some adjustments there.

I think a good quick lessson on some of the excel sheets wud be great. Al3k selected the line 1 and made it stay as he was scrolling. Then he selected the columns he was viewing and bordered them so they were easily visible. After that he'll need to explain. But seeing this done by another was great.

But holy crap let me say the efr down low has some serious get up. Thought from a light there does seem to be a hesitation.

[Okedokey]

I'd love some help tuning

[p0isin]

Post up some logs and your file I'm glad to try to help.

[Okedokey]

Post up some logs and your file I'm glad to try to help.

Thanks mate, will do

[StatusQuo]

Okay guys. Ive started on the Maximum VE section as promised, ill complete it when I wake up. I have to shut it down for the night. Damn mechanical blue keyboard switches are loud as hell.

But you guys can start reading it. If there are any suggestions, im all ears. Ive tried to go into all necessary detail.

Can anyone help me formatting this thing? Im not well versed in this lol.

P0isin - ill keep in touch with you bud if i got questions. You prefer the DM or email?

Okey - post logs bro. ill try to help.

[p0isin]

Email is a bit easier since I don't check DM as often but either works. I've got notes on different maps.

[p0isin]

Also, I can help with formatting.

[StatusQuo]

Okay I have completed the Maximum VE section. Pretty cool and easy math formula i figured to get the MaxVE sorted quickly.

[StatusQuo]

Also, I can help with formatting.

I emailed you

[p0isin]

Cool I'll check today after work and send you a response.

[StatusQuo]

Cool I'll check today after work and send you a response.

For sure.

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