ECMlink 1G E85 Tuning

[Tetsu]

I switched to E85 after installing 2150 injectors and the hellcat fuel pump and now it runs super lean. Anyone able/willing to look at some logs? Thanks.

 

[1990TSIAWDTALON]

You have ECMLink I assume, so change global settings in fuel to stoich for E (9.0) and see if it responds better. (Change, Save all to ECU, Enter)
The only way to learn it, is to play with it. I'm sorry I'm on a phone or I would look a any log you might post. They are MANY others that are super helpful to chime in if we get a log. Post the log as a "picture" but no still shots, a full Ecm log.

 

[Tetsu]

Yes. Running ECMLink. I recently got the SD setup working after correcting the wiring the previous owner had done and moved the lc2 wideband 02 sensor back right after the flex pipe and the car was running so smooth I decided to install the fuel parts and now this. I was actually surprised it started and ran. I can feel the extra power with the e85 kind of crazy, just need to dial it out.

I'm looking in the fuel tab on ECMLink. I'm not sure what I'm supposed to change? Global fuel setting? It was auto calculated for 2150 injectors and set to 78%. Here are a few logs. The last one 02.23.01.elg is the most recent with the E85. Thanks for the response. ^^/

 

[Tetsu]

I just drained all the e85 out. Going back to 93. Feel free to look at the logs and offer your expert options!

 

[Justin DuBois]

I just drained all the e85 out. Going back to 93. Feel free to look at the logs and offer your expert options!

Why go back?

 

[Tetsu]

Why go back?

I need to get a flex fuel sensor and different fuel filters. Besides i need to learn how to tune this thing and keep it from blowing up.

 

[Justin DuBois]

I need to get a flex fuel sensor and different fuel filters. Besides i need to learn how to tune this thing and keep it from blowing up.

I made the switch from E25 to E85 couple weeks back. FlexFuel sensor is not required - unless you want the convenience to vary the mix of fuel constantly.

Stock fuel filters are fine.

I did not look at all those logs - what is your primary issue?

 

[Tetsu]

I made the switch from E25 to E85 couple weeks back. FlexFuel sensor is not required - unless you want the convenience to vary the mix of fuel constantly.

Stock fuel filters are fine.

I did not look at all those logs - what is your primary issue?

Runs super lean under boost. AFR gauge going up under boost. Should go down right? Starts sputtering around 16 right when the turbo starts to whine maybe 4 or 5 psi.

 

[Justin DuBois]

Runs super lean under boost. Afr guage going up under boost. Should go down right? Starts sputtering around 16 right when the turbo starts to whine maybe 4 or 5 psi.

Yeah, you need to add more fuel in ECM Link in the fuel tab under 'Global Fuel" like @1990TSIAWDTALON mentioned. It is normal to make large tweak to global fuel when making the switch to account for the Stoich difference between E85 and Gasoline.

Also - you will want to change the AFR targets in Direct Access Max oct tables. 11's are a good WOT target until you get better calibrated. E85 won't burn well in the 10's, lots of misfire and break up.

Adjust your "Global deadtimes" to achieve +/- 0% Combined fuel trims to hit 14.7 AFR idle, and also adjust "Global fuel" to achieve a WOT target of 11.5 AFR (eventually 12s)

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The Calculator can help if you ignore some things... The Calculator produces one number - Global fuel in %. All you care about is the difference from where you are to what to change for E85. Open the calculator, enter 9.83 in the stoich field, click calculate and see how much the global fuel % changes. It should move global to "less negative" or more positive. You need to pull out less fuel than were you were on pump gas.

 

[Tetsu]

Yeah, you need to add more fuel in ECM Link in the fuel tab under 'Global Fuel" like @1990TSIAWDTALON mentioned. It is normal to make large tweak to global fuel when making the switch to account for the Stoich difference between E85 and Gasoline.

Also - you will want to change the AFR targets in Direct Access Max oct tables. 11's are a good WOT target until you get better calibrated. E85 won't burn well in the 10's, lots of misfire and break up.

Adjust your Global Dead Times for +- 0% Combined fuel trims to hit 14.7 AFR idle, and then for WOT target 11.5 (eventually)

Yeah! Direct access menu is where it's at! I still need to lean about how to adjust those tabs. I'm just afraid to mess with them thinking i might mess something up. I'm still waiting for ecm link forum access to read some more.

I seen it needed more fuel I just didn't know how to add it. Still learning you know. I wish there was a class to take for this. Bah!

Thanks for the replies though ^_^/

 

[dwb]

Runs super lean under boost. Afr guage going up under boost. Should go down right? Starts sputtering around 16 right when the turbo starts to whine maybe 4 or 5 psi.

Have you verified your fuel pressure raises 1:1 with boost?

 

[1990TSIAWDTALON]

All of these members pose very good questions and answers. I'm glad you found our forum, it is a wealth of informative members that are willing to help.

 

[Tetsu]

Have you verified your fuel pressure raises 1:1 with boost?

Can you see that with ECMLink? The only fuel gauge is under the hood. Should I put a fuel pressure gauge inside?

All of these members pose very good questions and answers. I'm glad you found our forum, it is a wealth of informative members that are willing to help.

Yes they are very knowledgeable. I'm just fulfilling a dream I had when I was younger. I know most of you guys been on this stuff for many years! I'm just now able to buy things and have time to tinker.

Lol too think back then all I needed was more fuel. Then there was my stoichiometry on the pillar doing absolutely nothing, but boy did I think I was cool

 

[dwb]

Can you see that with ecm link? The only fuel guage is under the hood. Should I put a fuel pressure guage inside?

Not without supporting mods. Make sure your FPR has a good boost source. You can run a boost leak test and simultaneously turn on the fuel pump via ECMLink to see if pressure increases.

 

[Tetsu]

Not without supporting mods. Make sure your FPR has a good boost source. You can run a boost leak test and simultaneously turn on the fuel pump via ecmlink to see if pressure increases.

What is the max psi I should charge the intake with?

 

[Justin DuBois]

What is the max psi I should charge the intake with?

No Boost for you. Not at first. If you have a hose going from the charge pipe to the WGA, (waste gate actuator) It will give minimum boost, probably about 7-10 psi. People here run all kinds of stuff, so there is no one answer to - "How much PSI"

 

[Tetsu]

No Boost for you. Not at first. If you have a hose going from the charge pipe to the WGA, (waste gate actuator) It will give minimum boost, probably about 7-10 psi. People here run all kinds of stuff, so there is no one answer to - "How much PSI"

Oh I mean to check for boost leaks.

 

[1990TSIAWDTALON]

Stay stock and have fun. Maintenance 1st as it can be an engine killer. Most of mine are not stock but it doesn't matter. Stock or not, Maintenance.

 

[Justin DuBois]

Oh I mean to check for boost leaks.

Oh - of course. That depends on what you are testing for - I generally go up slow to 30-40psi, or until I hear leaking.

 

[Tetsu]

Oh - of course. That depends on what you are testing for - I generally go up slow to 30-40psi, or until I hear leaking.

Can't too much psi cause more problems?

 

[Justin DuBois]

Can't too much psi cause more problems?

There are limits. I try to imagine a bicycle tire - or a car tire blowing a bead. You don't want to be near it.

It is a boost leak test. You should go up to and a little more than your turbo will be providing - else you don't know if it will hold, and its better to find out standing still.

 

[Tetsu]

You should go up to and a little more than your turbo will be providing.

Good point. What will the evo 3 big 16g provide

 

[Justin DuBois]

Good point. What will the evo 3 big 16g provide

Well, I've spiked it to 27-28 psi - but you don't usually run that.

 

[Tetsu]

Well, I've spiked it to 27-28 psi - but you don't usually run that.

Ok. So 25 should be good. What is a good upgrade from that turbo? 30 psi I think will be enough for me in the future after I get all this tuning stuff figure out. There is some what play in this turbo so I know it's coming.

 

[Justin DuBois]

it’s not about the pressure it’s more about the volume. Max out your Big 16 G first they are a ton of fun. My backup turbo is a Big 16G