Open Flash Tablet + E85 = Safe for a STOCK CAR??

[SportInjected]

Not bad at all, and It's gotten a lot better, but it still takes me a few cranks to get it going with temperatures close to 0 degrees.

[Lemar58]

I run stage 2 EL 85 with stock headers and it runs fine. I'm getting the headers soon anyways. I couldn't wait though. Even in warmer temps (50,60) sometimes it takes me a few cranks on a cold engine. I figure the mixture of my e85 is just different

[Chimera]

just a curiosity, is there any valid reason to be concerned about additional stress on the fueling system?

[steve99]

Originally Posted by ScionFrsFan

Didn't they fix cold starts? Is it really bad?

Probably only an issue below 30F or so , if you get it add a gallon of petrol to a full tank of e85 and it should sort it

you won't have problem on your first tank as their will already be a gallon or two of petrol in tank.

[ScionFrsFan]

Originally Posted by Lemar58

I run stage 2 EL 85 with stock headers and it runs fine. I'm getting the headers soon anyways. I couldn't wait though. Even in warmer temps (50,60) sometimes it takes me a few cranks on a cold engine. I figure the mixture of my e85 is just different

How low do you wait till you start pumping e85 in? Just wait till gas light kicks on? Fill entire tank with e85?

[steve99]

Originally Posted by ScionFrsFan

Just waiting for my fuel light to kick on lol. I have 1/4 tank left. I'm not an expert on data logging. What should I be looking for, to know it's time to go full blast on E85 lol. I'm going to follow Steve's advice on driving slow for the first 10 min.

Watch your fuel trims long term fuel trim and short term fuel trim while on petrol so you get see how they look, using your OFT Short term trim will jump around as your on off the accelerator and ltft will be much more stable as its the long term average of the stft over time.
Both should be less than 10 % in steady state easy driving most likely less
than 6%.


To change to E85

1. run your tank down till light on (still 1 or 2 gallons left)
2. fill with e85
3. Plug in your oft and monitor fuel trims stft and ltft use guage big display.
4.Drive off easy on petrol tune (don't go on highway) no wide open throttle stay under 4k
5. after a mile or 2 you will see stft rise rapidly to over 10% and stay there, as soon as you see this pull over and stop
6. Flash E85 tune
7. Drive off easy monitoring fuel trims again, they will probably be a bit higher than of petrol as they will be compensating for differences in E% of your E85 , but they should stabilize below 10% most likely less than 8%. Again this is steady state driving not on/off throttle.

8. Give it 20 miles or so to learn E% of your E85 and you should be sweet.

reverse when going back to petrol.

You can just flash the E85 tune at the service station but the learning process will be longer as the E85 tune will try to learn petrol then have to learn E85 trims, once the petrol clears

Either way just drive easy for first 10 to 15 miles of so till everything settles down on the new fuel, then gradually give it some more revs.

[ScionFrsFan]

Originally Posted by steve99

Watch your fuel trims long term fuel trim and short term fuel trim while on petrol so you get see how they look, using your OFT Short term trim will jump around as your on off the accelerator and ltft will be much more stable as its the long term average of the stft over time.
Both should be less than 10 % in steady state easy driving most likely less
than 6%.


To change to E85

1. run your tank down till light on (still 1 or 2 gallons left)
2. fill with e85
3. Plug in your oft and monitor fuel trims stft and ltft use guage big display.
4.Drive off easy on petrol tune (don't go on highway) no wide open throttle stay under 4k
5. after a mile or 2 you will see stft rise rapidly to over 10% and stay there, as soon as you see this pull over and stop
6. Flash E85 tune
7. Drive off easy monitoring fuel trims again, they will probably be a bit higher than of petrol as they will be compensating for differences in E% of your E85 , but they should stabilize below 10% most likely less than 8%. Again this is steady state driving not on/off throttle.

8. Give it 20 miles or so to learn E% of your E85 and you should be sweet.

reverse when going back to petrol.

You can just flash the E85 tune at the service station but the learning process will be longer as the E85 tune will try to learn petrol then have to learn E85 trims, once the petrol clears

Either way just drive easy for first 20 miles of so till everything settles down on the new fuel, then gradually give it some more revs.

THANK YOU!!!!!

[steve99]

Originally Posted by Chimera

just a curiosity, is there any valid reason to be concerned about additional stress on the fueling system?

Truth is no one knows 100 % with this car as E85 tune have only been out maybe a year or so, some guys run e85 full time and have clocked up maybe 20 or 30k miles on e85 with no obvious effects. However who knows the long term issues after five years or more, its looking ok but no guarantees.

Any mod you make that increases power theoreticly increases loads and stresses and pushes engine and other components further from their designed and tested limits, its a risk you have to accept if you modify anything

[Carlitoz3]

Just fueled up tonight and my baby loves her corn juice

[l0aded]

Am I missing something or why is everyone running stg 2 with their stock cars? I'm currently running stg1 91 octane, would going stg2 be better? Same goes for stg 1 and 2 e85s as well since I switch occasionally.

[steve99]

Originally Posted by l0aded

Am I missing something or why is everyone running stg 2 with their stock cars? I'm currently running stg1 91 octane, would going stg2 be better? Same goes for stg 1 and 2 e85s as well since I switch occasionally.

With OFT
Stage 1 maps are for cars with stock headers
Stage 2 maps for aftermarket catless headers EL or UEL

E85 maps are all stage 2 maps however shiv advised that stock cars could run the stage 2 EL E85 maps due to E85 being much more knock resistant than petrol you can get away with stock headers
Stage 2 tunes run more timing advance and a bit richer than stage 1 maps as they assume you have catless headers. It ok on stock car on e85 but dont try stage 2 on petrol unless you have aftermarket catless headers.

It does tend to run a bit rich on stock car and you can lean it out a bit on e85 to get a bit better economy and likely a bit more power if your keen they tend to run mid 11 afr up top you could lean it to arround 12.

see my earlier post in this thread with links to shivs posts on this

[mid_life_crisis]

The thing to remember is that the E85 tune is more aggressive.
What this means is that if you accidentally run E85 on the gasoline tune you won't hurt anything, you just won't make power. The car will feel sluggish.
If you do the reverse and run gasoline on the E85 tune there is a chance of damaging something, although even then the ecu should pull timing to protect the motor.
If you are switching from gas to corn and are seriously paranoid, you could fill up with E85 and drive for a few miles with the gas tune then flash to the E85 tune. From what I've read you should know when the lines are clear of gasoline.
All of this is based on reading: I don't have E85 readily available so no personal experience with it.

[ScionFrsFan]

Thanks to everyone who helped me out. Today was the day! E85 is fun, not going to lie I was expecting a little bit more lol. Only because some reviews make the car sound like a rocket with e85.

[ScionFrsFan]

Side question: Ahhh first day on the juice and for the hell of it, I tried some 0-60 runs.

Yes I have a automatic, but 0-60 was 6.9-7 sec? Yes that is faster, but it seems with a reported 25-30 extra hp. It should be faster than that?