e85 on tuned 5.0?
01-25-2014, 05:12 PM
#1
e85 on tuned 5.0?
Hey guys, I have done a little searching around on the forum, but couldn't find a definitive answer about running e85. My question is, can I run e85 on one of my 5star tunes like a 93 octane or would I need to swap back to the stock tune to run e85? Thanks in advance!
01-25-2014, 07:07 PM
#2
01-25-2014, 07:12 PM
#4
On more meds than ymeski
I know this has been discussed before (search doesn't always get you the results you are looking for) so I'm sure someone will chime it, give it a bit.
01-25-2014, 08:17 PM
#5
Senior Member
The tune must of the ethanol switch enable in order to run e85 properly. With that said, you should be able to add it to the tank and not screw anything up, you just won't see the performance gain you normally would by switching to ethanol. Getting a tune for ethanol fuel will yield some decent gains.
The reason for this is that our trucks have widebands which measure lambda so it will adjust for ethanol content automatically, as long as you don't run out of injector. Stoich as measured by lambda is 1.0 (as measured by the ecu) for both ethanol and gasoline. The factory injectors should be more than enough for basic bolts ons.
Example: My 2004 volvo s60 2.5T has a wideband on it and I'm currently running 50% e85 in the tank. It automatically corrects fueling via the lambda (wideband) sensor so it's perfectly safe as long as I don't run out of fuel (be it the pump, injector, fuel line size etc.). It does not have a tune.
The reason for this is that our trucks have widebands which measure lambda so it will adjust for ethanol content automatically, as long as you don't run out of injector. Stoich as measured by lambda is 1.0 (as measured by the ecu) for both ethanol and gasoline. The factory injectors should be more than enough for basic bolts ons.
Example: My 2004 volvo s60 2.5T has a wideband on it and I'm currently running 50% e85 in the tank. It automatically corrects fueling via the lambda (wideband) sensor so it's perfectly safe as long as I don't run out of fuel (be it the pump, injector, fuel line size etc.). It does not have a tune.
Last edited by mechanicboy; 01-25-2014 at 08:19 PM.
01-25-2014, 08:34 PM
#6
2011 ford f150 5.0 Roush supercharged truck
12.11 at 115, Ocasioh, 2011 Screw 2wd, Roush phase 2, Long tube headers, 50% e85/93, MPT tuned, street tires
Last edited by ocasio0727; 01-25-2014 at 08:38 PM.
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Bdukes55 (01-25-2014)
01-25-2014, 09:12 PM
#7
The tune must of the ethanol switch enable in order to run e85 properly. With that said, you should be able to add it to the tank and not screw anything up, you just won't see the performance gain you normally would by switching to ethanol. Getting a tune for ethanol fuel will yield some decent gains. The reason for this is that our trucks have widebands which measure lambda so it will adjust for ethanol content automatically, as long as you don't run out of injector. Stoich as measured by lambda is 1.0 (as measured by the ecu) for both ethanol and gasoline. The factory injectors should be more than enough for basic bolts ons. Example: My 2004 volvo s60 2.5T has a wideband on it and I'm currently running 50% e85 in the tank. It automatically corrects fueling via the lambda (wideband) sensor so it's perfectly safe as long as I don't run out of fuel (be it the pump, injector, fuel line size etc.). It does not have a tune.
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01-25-2014, 09:30 PM
#8
Truck has to be tuned with e85. Unless you empty tanks completely it would be hard to do. I race mine at 50% e85/93. It was tuned that way. I put too much e85 last week in it and it bogged a lot, ran crappy. 12.11 at 115, Ocasioh, 2011 Screw 2wd, Roush phase 2, Long tube headers, 50% e85/93, MPT tuned, street tires
01-25-2014, 11:57 PM
#10
Senior Member
That's because you did it everyday! I drive like a grandpa so I still get the rush when I put the hammer down!
For the record, I don't change tunes when adding ethanol, the computer compensates automatically, like I said before.
For the record, I don't change tunes when adding ethanol, the computer compensates automatically, like I said before.