How to run E85 on stock 86 BRZ FRS with OFT tune

[EffaressNOOB]

Originally Posted by steve99

IAM = advance multiplier


Ignition advance is total ignition timing




IAM at 0.9 is acceptable but not good, on E85 you should be iam=1 as you should have no knock

I just filled up my 3rd tank of E85. During my 2nd tank, my LTFTs during idle and cruise are within +/- 5%, but my IAM=0


I don't hear or feel anything wrong with the way the car drives. Do I only check IAM during WOT or should it be at 1 the whole time?

[steve99]

Originally Posted by EffaressNOOB

I just filled up my 3rd tank of E85. During my 2nd tank, my LTFTs during idle and cruise are within +/- 5%, but my IAM=0


I don't hear or feel anything wrong with the way the car drives. Do I only check IAM during WOT or should it be at 1 the whole time?

Im pretty sure iam is not logging correctly if its zero, some leter model cars oft logging of some parameters does not work correctly


Iam should be one all the time, but i think its just monitoring incorrectly



you should see ignition advance at about 32 degrees at full throttle higher rpm if so your not pulling any timing and iam os actually 1..

[EffaressNOOB]

Originally Posted by steve99

Im pretty sure iam is not logging correctly if its zero, some leter model cars oft logging of some parameters does not work correctly


Iam should be one all the time, but i think its just monitoring incorrectly



you should see ignition advance at about 32 degrees at full throttle higher rpm if so your not pulling any timing and iam os actually 1..

Ok, I'll check on the IGN ADVANCE tonight when I drive home. I also noticed that I may be able to ADD or SUBTRACT the IAMs manually through the tablet itself? good or bad idea? lol!

[steve99]

Originally Posted by EffaressNOOB

Ok, I'll check on the IGN ADVANCE tonight when I drive home. I also noticed that I may be able to ADD or SUBTRACT the IAMs manually through the tablet itself? good or bad idea? lol!

yes you can add and remove monitoring\logged parameters on oft, not much point monitoring iam if it not logging correctly, tell the oft guys they may update oft software to fix.

[EffaressNOOB]

Originally Posted by bleox

Btw I meant -7.5.....Yeah it is my first tank of e85...I'm check it out I only have like 25 miles on this tank so far, I'm drive a lil more i rushed from the old tune to the e85 tune...STFT raised a lot and nothing was happening in the LTFT because according to guide it states shortly after it should increase nothing was happening and I switched over ...I think think I made the jump to the e85 to son and some gas aka petrol was still left in the lines or where ever the LTFT sensor is lol


Sent from my iPhone using Tapatalk

Has your LTFT gotten any better? During my first tank @ 70mph, I was in the high -8% range. Now on my 3rd tank and I'm at -3.5% @ 3000rpm and +6% @2500rpm

@steve99
At wot on 2nd and 3rd gear, my ignition advance is right at 32 degrees and my AFR is around 12:1, but IAM is still at 0. I'm hoping it's a software issue. Nothing to worry about right? I'll give @shiv and his team a holler to see what they can do about an update..... Thanks again

[steve99]

Originally Posted by EffaressNOOB

Has your LTFT gotten any better? During my first tank @ 70mph, I was in the high -8% range. Now on my 3rd tank and I'm at -3.5% @ 3000rpm and +6% @2500rpm

@steve99
At wot on 2nd and 3rd gear, my ignition advance is right at 32 degrees and my AFR is around 12:1, but IAM is still at 0. I'm hoping it's a software issue. Nothing to worry about right? I'll give @shiv and his team a holler to see what they can do about an update..... Thanks again

Ok that advance and afr sound spot on for e85 tunes, the iam at 0 is definitly a bug in oft logging setup each rom calid has different ram addresses for logged parameters

if iam was actually O the advqnce would be much less and the car likey in limp home mode

[TilesMeague]

If I picked up a 5w-20 e85 rated oil, would it be compatible for flip flopping between e85 and 91? E85 isn't widely available in my area.

[steve99]

Originally Posted by TilesMeague

If I picked up a 5w-20 e85 rated oil, would it be compatible for flip flopping between e85 and 91? E85 isn't widely available in my area.

Should be fine if is SN or GF5 rated

[Fizz]

@steve99 off topic question, but I'm thinking of mixing some E85 into our (crappy) 98ron fuel to achieve approx E10....question is, how many litres of E85 would do you need to fill in order to achieve this?

Currently running OFT350 tuned for 98 only, but adding some E85 would surely help in the summer months later on.

[Wayno]

Originally Posted by Fizz

@steve99 off topic question, but I'm thinking of mixing some E85 into our (crappy) 98ron fuel to achieve approx E10....question is, how many litres of E85 would do you need to fill in order to achieve this?

Currently running OFT350 tuned for 98 only, but adding some E85 would surely help in the summer months later on.

It's going to be less painful and much safer to tune the car properly than calculate and mess up a different mixture of E% every fill up and have the AFR skewed during the 100km or so it takes for the LTFT to catch up.

[steve99]

Originally Posted by Fizz

@steve99 off topic question, but I'm thinking of mixing some E85 into our (crappy) 98ron fuel to achieve approx E10....question is, how many litres of E85 would do you need to fill in order to achieve this?

Currently running OFT350 tuned for 98 only, but adding some E85 would surely help in the summer months later on.

depends which E85 your using.

United E85 is actually 85% consistent and mixed with premium petrol

Caltex Eflex is minimum 70% but varies but mixed with low grade petrol.

For what you want United will be far better option.

To achieve aprox 10% E content in a full tank of 98 (assuming the 98 is ethanol free) you will need to add aprox 6 litres of united E85 to a full tank of 98 petrol (ie 50 litres)

calcs

united E85 is 85% ethanol so 6L of united E85 contains 6*0.85 litres of ethanol =5.1 litres of ethanol in the 6 litres of E85.

car holds aprox 50 litres so for 10% you need 5 l of ethanol added so aprox 6 litres of united E85 then fill tank with petrol.

generally your not going to be fully empty, even on low fuel light there is about 10L of fuel left. so if your at low fuel light of close you will only need about 5 litres of E85 then fill tank.

[yip]

Been running OFT/E85 for about 5 months now and never had an issue until my last tank of gas. At about 1/2 tank I felt the car start to hesitate at throttle tip in and a dull popping sound a few times. It also felt like when i was WOT there was resistance like I was carrying 2 passengers or a feeling of drag.

Was thinking maybe it was just me but I drove it down to pretty much empty and filled up again and it felt like normal again right away and haven't felt any of the previous issues since.

[Camsheim]

Hi guys,

I have flashed the E85 Stage 2 EL to my car (Mid 2012 AT with just the HKS Hybrid Filter)

This is the datalog after 50km/30mi (1st Tank , approx 6/7L RON98 left before refueling)

Can you check my datalog ? it seems ok but i have some doubts with the knocks (Negative ?)

http://www.datazap.me/u/camsheim/e85...-8-10-11-12-14

Thanks

[steve99]

Originally Posted by Camsheim

Hi guys,

I have flashed the E85 Stage 2 EL to my car (Mid 2012 AT with just the HKS Hybrid Filter)

This is the datalog after 50km/30mi (1st Tank , approx 6/7L RON98 left before refueling)

Can you check my datalog ? it seems ok but i have some doubts with the knocks (Negative ?)

http://www.datazap.me/u/camsheim/e85...-8-10-11-12-14

Thanks

cannot access the log did you click the public option ?