Why? It raises the octane, so you can run more boost easily. It just requires more fuel delivery because it has lower energy density. Are you near injector or fuel pump flow limits?
You absolutely need a tune for e85 exclusively. You can throw a few gallons in to fix some timing issues but I’m pretty sure you need to adjust ignition timing to keep your afr in range to run it exclusively.
E85 is rarely actually e85 so an ethanol content analyzer is usually required to adjust the ecu accordingly. It’s not just higher octane, all that does is allow for higher compression at a similar temp.
I drive a 2018 wrx with a very modest etune. It’s tuned for longevity as it’s not even an hp gain. This will be difficult to run in my car.
Why? It raises the octane, so you can run more boost easily. It just requires more fuel delivery because it has lower energy density. Are you near injector or fuel pump flow limits?
You absolutely need a tune for e85 exclusively. You can throw a few gallons in to fix some timing issues but I’m pretty sure you need to adjust ignition timing to keep your afr in range to run it exclusively.
E85 is rarely actually e85 so an ethanol content analyzer is usually required to adjust the ecu accordingly. It’s not just higher octane, all that does is allow for higher compression at a similar temp.