OFT Openflash V4 tunes released for 2017+ with Launch/FFS

[tomm.brz]

Then it s more difficult task, shiv put the 2 maf after-start compensations ( in gear and neutral) the same, like other tuners do but i notice too that when you press the clutch and put a gear in, it tends to "accelerate" a bit on its own when car is still cold, not that much just a bit

My tuner fixed it compensating the (after start in gear) map
My guess would be there are some maps that act on it but they are not defined yet
Anyway you have this problem all the time? maybe it subsides a bit with time

[stlgrym3]

It definitely subdued after drive the car around a bit. After been parked for over an hour at the gym it was still noticeable but definitely not as obvious as the morning start. Mine is an AT btw.

[smg1138]

Anybody else found their MPG drop on the v4.03 tunes? On E85 I'm only getting about 15mpg since switching. On the old v2.076 tune I got around 18mpg on average.

[SuperTom]

Quote:
Originally Posted by SuperTom
from that page

"Code P2270 is an indication that the O2 sensor does not detect the catalyst efficiency and can cause the vehicle to fail an emission test."


I cleared it for now I will see if it pops back up again

Originally Posted by Jasonb

P0420 is the typical cat efficiency code. That's the one that is normally disabled in a tune.

Just to follow up switching from the v4.01 to v4.02 the code no longer pops up. So something was tweaked in the tunes. I couldn't find v4.03 for K00C on their site im guessing that revision is for the AT guys.

[SuperTom]

Originally Posted by SuperTom

Quote:
Originally Posted by SuperTom
from that page

"Code P2270 is an indication that the O2 sensor does not detect the catalyst efficiency and can cause the vehicle to fail an emission test."


I cleared it for now I will see if it pops back up again









Just to follow up switching from the v4.01 to v4.02 the code no longer pops up. So something was tweaked in the tunes. I couldn't find v4.03 for K00C on their site im guessing that revision is for the AT guys.

Well damn it the code popped up again after driving 200 miles p2270. Everything I read is that its to do with the rear 02 sensor behind the cat reading lean? I thought the front sensor is for reading air fuel ratio, the back was just for if the cats are working or not. This is really baffling me only thing that I changed was the tune, going from the v3 beta to the new v4.02. Never had a code on the old tune.

[Teseo]

Could be the o2 sensor was swapped in wrong position, just a thought

[Tuxedo Tony]

I have been running the new v4 stg 2+ tune for over a month. I'm using Canadian Shell 91 octane. My IAM goes to 1 after 25min of driving. My questions are. Is the IAM set lower for fuel grades and to allow the engine to warm up to operating temp for expansion reasons?. Also if the ecu is learning the fuel grade, does it also adjust the timing for knock across the rev range? For example it knocks below 3k rpm so keeps the IAM at .7 and then detects no knock above 3500 rpm so advances it to 1 IAM above 3500. Probably a stupid question but, insight would be appreciated. Thanks in advance!

[Jasonb]

Originally Posted by Tuxedo Tony

I have been running the new v4 stg 2+ tune for over a month. I'm using Canadian Shell 91 octane. My IAM goes to 1 after 25min of driving. My questions are. Is the IAM set lower for fuel grades and to allow the engine to warm up to operating temp for expansion reasons?. Also if the ecu is learning the fuel grade, does it also adjust the timing for knock across the rev range? For example it knocks below 3k rpm so keeps the IAM at .7 and then detects no knock above 3500 rpm so advances it to 1 IAM above 3500. Probably a stupid question but, insight would be appreciated. Thanks in advance!

There is more than one method of knock control on a Subaru. There is also FLKC which adjusts it more finely.

[Kodename47]

Originally Posted by SuperTom

Well damn it the code popped up again after driving 200 miles p2270. Everything I read is that its to do with the rear 02 sensor behind the cat reading lean? I thought the front sensor is for reading air fuel ratio, the back was just for if the cats are working or not. This is really baffling me only thing that I changed was the tune, going from the v3 beta to the new v4.02. Never had a code on the old tune.

Could be that the code wasn't set by default on the old Cal type. There are differences between different region cals with the DTC settings for some reason. Without being able to check I can't confirm.

Originally Posted by Tuxedo Tony

For example it knocks below 3k rpm so keeps the IAM at .7 and then detects no knock above 3500 rpm so advances it to 1 IAM above 3500.

Advance multiplier is global.

[SuperTom]

Originally Posted by Teseo

Could be the o2 sensor was swapped in wrong position, just a thought

Well I drove for ~6 months through a harsh winter with out any issues at all on the V3. Only thing changed was the new tune. I will check underneath the car to see if Coincidentally a wire got frayed or melted the exact same time I loaded the new tune

[Tuxedo Tony]

Thanks Codename47, and Jasonb. One more thing. Shell 91 octane is the highest none ethanol blend in Canada. My IAM always goes to 1 after 25min. Would it be acceptable to change the initial IAM to 0.9000. Also do I need to change any other table when changing just the initial IAM?

[SuperTom]

Originally Posted by Kodename47

Could be that the code wasn't set by default on the old Cal type. There are differences between different region cals with the DTC settings for some reason. Without being able to check I can't confirm.

Advance multiplier is global.

Is there anything I can do or check?? I will double check all connections pipewise and 02 wise


Also my Advance multiplier starts at .7 everytime and takes 20 mins to jump up. Im on 93 octane. Went to .84 today during hour commute, Highest Ive seen it is .96. Is it normal to reset everytime I turn off the car?

[steve99]

Originally Posted by SuperTom

Is there anything I can do or check?? I will double check all connections pipewise and 02 wise


Also my Advance multiplier starts at .7 everytime and takes 20 mins to jump up. Im on 93 octane. Went to .84 today during hour commute, Highest Ive seen it is .96. Is it normal to reset everytime I turn off the car?

P2270 is not a "normal " code you would expect from removing a cat.

https://www.obd-codes.com/p2270

That code indicares you have a real problem like exhaist leak or bad o2 sensor or incoreectly installed front 02 sensor and it constantly reading lean afr.

If you getting that code you would also expect to see high positive fuel trims.

P0420 is the code for cat efficiency.

Post up a log of tune


With parameters below cruise idle and a wot run to redline

V4 tune iam intial is set to 0.7 so each time car stopped it resets to 0.7

Engine Speed (rpm)
Throttle (percent)
MAF Voltage (volts)
Engine Load (g/rev)
Ignition Advance / Total Timing (degrees)
AFR
Commanded AFR / Target AFR
STFT (percent)
LTFT (percent)
Oil Temp (F)
CL/OL / Fuel Sys Status (2 = CL, 4 = OL)
IAT / Intake Air Temp (F)
IAM / Ignition Advance Multiplier
FLKC / Fine Learning Knock Correction (degrees)

[Jasonb]

Originally Posted by Tuxedo Tony

Thanks Codename47, and Jasonb. One more thing. Shell 91 octane is the highest none ethanol blend in Canada. My IAM always goes to 1 after 25min. Would it be acceptable to change the initial IAM to 0.9000. Also do I need to change any other table when changing just the initial IAM?

On 91, I'd leave it at .7.