Flex Fuel: How to Guide - Who wants to see it?

[bbrooks98]

The conflicting things about whether it's the 11-14 or 15 that can run on E85 with just minor bolt ons is getting me. Being able to log IDC would really be nice. Any workaround to log it?

Put in a request for Injector pulse width. Eric just did mine last week.
screenshot IPW.jpg

[RSlo]

Put in a request for Injector pulse width. Eric just did mine last week.
screenshot IPW.jpg

I can get IPW to log on my 2016 but for some reason IDC does not. Maybe I'll send a note to support.

[tbrtuning]

IDC is just a calculation based on IPW. Probably faster to just log IPW and then do the calculation than to have the calculation being done just to log IDC instead of IPW.

IDC = IPW * (RPM / 120)

I was going to post a description but here's a link instead... http://www.romraider.com/RomRaider/U...ectorDutyCycle

[RSlo]

IDC is just a calculation based on IPW. Probably faster to just log IPW and then do the calculation than to have the calculation being done just to log IDC instead of IPW.

IDC = IPW * (RPM / 120)

I was going to post a description but here's a link instead... http://www.romraider.com/RomRaider/U...ectorDutyCycle

I understand it's a calculation but in bbrooks charts his InjDC % math is working mine is not. So it s working for him but for some reason not for me

[tbrtuning]

Is your IPW logging properly? If it is and the predefined math isn't working you'll have to define your own using the correct PID you're logging. I tried to log IPW on a 2011 I was experimenting with flex fuel on and after updating VCM to 3.2 and repolling for parameters I still didn't have IPW available.

[Jn2]

I sat HPT 3.2 just came out, does it have the IPW logging?

Also while I was out login e36 the cat went into COT and maintained a .80 to redline on a pull, so looks like stock injectors should be able to keep up on e 47 with COT disabled at fist of course.

side note, I upgdraded to v3.2 and still no IPW under channels

[Tapi]

I didn't find the "switch" you're all talking about when I downloaded Grand Marquis 2010 tune file which I found from the repository. I might be in need of studying '07 Grand Marquis tune because models in states are sold as flex fuel cars but export versions are not. Perhaps you can help me?

[Jn2]

I didn't find the "switch" you're all talking about when I downloaded Grand Marquis 2010 tune file which I found from the repository. I might be in need of studying '07 Grand Marquis tune because models in states are sold as flex fuel cars but export versions are not. Perhaps you can help me?

This thread was for Copperhead ECM's in the Coyotes. They have the Flex fuel switch, other vehicles may not...You may want to email support and find out.

[ghostofnyc]

I'm in for guide

[xinacyra]

How can i get this table added to my tune it doesnt come up

[Jn2]

I just reached out to support to see if they could add IPW support for me, you may need to do the same.

[4wheelinls1]

I don't subscribe to that idea with these cars. They like more timing and more fuel as I have experi9
enced tuning 93, e85 and MS109.

I agree. I've seen E85 detonate due to being lean. Adding fuel lowers temps and allows often more timingvand susequent power.

[joe@kpracing]

Any info on how the spark is derived? ie what the Flex fuel (Blending vs Ethanol%) is actually blending?