Need help! Flex fuel

[BrokeCTROwner]

Just installed prl’s flex fuel kit on Tuesday (that actually came with the wrong fitting for the hpfp but I made it work) then put 2 gallons of e85 in the car and added the flex fuel capabilities to the 91 octane intercooler base map. Now when I floor it the car will cut throttle or sometimes misfire. I’ve looked at the datalogs and from what I can see the car is running normal in regular driving you wouldn’t know anything was wrong with the car. Only mods are prl stage 1, intake mishi intercooler, hondata, and flex fuel

Sponsored

 

[Nitroturtle]

If you're running flex fuel, you have to run one of the two available flex fuel basemaps, or get a custom tune. I don't think just checking the box in a different tune will work, but I could be wrong. Maybe try one of the flex fuel maps and see if you have the same issue.

 

[ebatr24]

Just enabling flex fuel without actually running a calibration that has been tuned for flex fuel is a great way to blow up your car.

 

[BrokeCTROwner]

It seems should add that I did initially run one of the new flex fuel maps hondata put out and on that map I couldn’t go past 4k under load

 

[boosted180sx]

can i see the log you took?

not sure what would stop you from WOT past 4k

 

[BrokeCTROwner]

can i see the log you took?

not sure what would stop you from WOT past 4k

Yes! I’m currently trying to upload some datalogs (you’re actually just the person I was hoping would help out)

 

[kefi]

I'm curious to look at this too, despite having no E85 experience yet.. really wonder what it looks like. You're in good hands with boosted though

Protip: the forum won't allow you to upload the raw datalog, but if you zip it up it'll upload.

 

[BrokeCTROwner]

Update: currently running the hondata e25 map and the issue is still persisting

 

[kefi]

Update: currently running the hondata e25 map and the issue is still persisting

The E25 map isn't a flex fuel map. It specifically says you have to measure the fuel yourself to make sure it's actually E25.

 

[BrokeCTROwner]

The E25 map isn't a flex fuel map. It specifically says you have to measure the fuel yourself to make sure it's actually E25.

I’m aware of that yeah that map wants you between 23%-27% which is what the car is on now that I added another half gallon

 

[Fk8blaze]

I’m aware of that yeah that map wants you between 23%-27% which is what the car is on now that I added another half gallon

I’m having the same issue. I’m fbo with rs450 as well as hondata fuel system and prl flex fuel. Did you figure out what it was? I was running e30, dropped it down to e20.

 

[BrokeCTROwner]

I’m having the same issue. I’m fbo with rs450 as well as hondata fuel system and prl flex fuel. Did you figure out what it was? I was running e30, dropped it down to e20.

My issue ended up being the intank fuel pump failing.

 

[Centripetal]

It almost sounds like the ECM is still using the coolant sensor as a coolant sensor. That is, instead of measuring ethanol content. When the car is cold (voltage low), the ECM will prevent you from applying high load.

Sponsored