Car seems to be pulling timing with OFT v4.03 Stg1 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

localhost · 08-07-2018, 11:26 PM

Hello folks,

I've flashed the OFT v4.03 ROM onto my car about a month ago and been daily driving it since. I've only recently started to datalog because the butt-dyno said things felt a little off.

I checked my IAM today and it was pegged at 0.56 the whole time. I'm seeing knock correction come on at certain times too, plus my LTFT varies between -6.5% and -3.9%. I tried the second gear run from ~2000 rpm to about 7000rpm at ~30% throttle hoping I could get the IAM up a little, but saw no chance. I also saw knock correction kick on around 3000rpm during that run. I did see IAM at around 0.76 last night, but I can't be 100% sure. Even after a restart of the car, the IAM stays at 0.56 - which is expected behaviour from reading other threads.

I'm using Shell 91 in Canada. The car definitely feels slower and less responsive than stock to me. Any idea what might be wrong? I feel like it might be a case of a batch of bad fuel, but I'll have to wait until I empty this tank to verify that. Car is stock except for a high flow air filter.

Here are two datalogs that might help:

https://datazap.me/u/rb28dett/low-iam-1?log=0&data=1-13
https://datazap.me/u/rb28dett/low-iam-2?log=0&data=1-10

Many thanks in advance for any help

I might try re-flashing the stage 1 tune again and seeing if anything changes.

EDIT: Something a little odd to me as well. My car is a MY15 MT FRS with a calibration ID of ZA1JD00C, but on the OFT website there's no matching tune. The only file for JD00C is for a MY14 (not 15) which is what I've flashed. I'm not sure if that is what is causing the issues. Also I've never been able to get FFS to work (it just bounces off the full rev limiter) even though LC works.

Screen shot of my Openflash Manager included as an attachment.

I flashed the ROM with FW version 1.51, but the OFT just updated itself to 1.53. I'm not sure what the changes are between them and if I should re-flash.

steve99 · 08-08-2018, 02:04 AM

Yes with 91 fuel on v4 tunes the iam is unlikely to ever be 1 and you will always have some knock

I could modify tune for you to run better on 91

Message me if your interested

Pixeld303 · 08-08-2018, 10:05 PM

Just a quick note. You didn't blur out the S/N on the top

localhost · 08-08-2018, 10:26 PM

Quote:

Originally Posted by Pixeld303

Just a quick note. You didn't blur out the S/N on the top

Thanks, fixed

vin08 · 08-10-2018, 01:01 AM

yeah. seem like the my car is not as responsive with the 4.0 stage 2 plus update. I am thinking switching back to the older Stage 2OFH v1.0.

Steve,

Is there a 4.0 stage for the openflash headers I can download?

DarkSideFRS · 08-10-2018, 02:08 PM

Quote:

Originally Posted by steve99

Yes with 91 fuel on v4 tunes the iam is unlikely to ever be 1 and you will always have some knock

I could modify tune for you to run better on 91

Message me if your interested

i would love a 91 specific tune!

Ultramaroon · 08-10-2018, 03:38 PM

[jack]Best username ever.[/jack]

localhost · 08-10-2018, 06:11 PM

Quote:

Originally Posted by Ultramaroon

[jack]Best username ever.[/jack]

If that was meant for me, thanks

mizzta21 · 08-14-2018, 10:25 PM

Quote:

Originally Posted by steve99

Yes with 91 fuel on v4 tunes the iam is unlikely to ever be 1 and you will always have some knock

I could modify tune for you to run better on 91

Message me if your interested

I am also curious, I’ll pm you

iFunner · 08-15-2018, 09:27 AM

Is it always better to run 93+ on Stage 1 on 4.03 to reduce knock?

localhost · 08-15-2018, 11:14 AM

I'm also a little curious as to what kind of power loss there is between running 93+ and just 91 on these tunes. Especially if the car is pulling 30% of the timing at 91.

tomm.brz · 08-15-2018, 11:48 AM

Quote:

Originally Posted by localhost

I'm also a little curious as to what kind of power loss there is between running 93+ and just 91 on these tunes. Especially if the car is pulling 30% of the timing at 91.

am at 0.7 doesnt mean 30% of the timings is pulled
it s 30% of The ignition advance map (Knock correction A)
we are talking of maximum 3 degrees of timing so dont Know,something less than 10-12cv probably

localhost · 08-15-2018, 12:23 PM

Quote:

Originally Posted by tomm.brz

am at 0.7 doesnt mean 30% of the timings is pulled
it s 30% of The ignition advance map (Knock correction A)
we are talking of maximum 3 degrees of timing so dont Know,something less than 10-12cv probably

Ahh thanks for the clarification. That makes perfect sense

jRuN · 08-22-2018, 10:51 PM

I noticed the same thing. The tune says it's for a MY14 and my car is a MY15. I have the same calibration ID as you too

Quote:

Originally Posted by localhost

Hello folks,

I've flashed the OFT v4.03 ROM onto my car about a month ago and been daily driving it since. I've only recently started to datalog because the butt-dyno said things felt a little off.

I checked my IAM today and it was pegged at 0.56 the whole time. I'm seeing knock correction come on at certain times too, plus my LTFT varies between -6.5% and -3.9%. I tried the second gear run from ~2000 rpm to about 7000rpm at ~30% throttle hoping I could get the IAM up a little, but saw no chance. I also saw knock correction kick on around 3000rpm during that run. I did see IAM at around 0.76 last night, but I can't be 100% sure. Even after a restart of the car, the IAM stays at 0.56 - which is expected behaviour from reading other threads.

I'm using Shell 91 in Canada. The car definitely feels slower and less responsive than stock to me. Any idea what might be wrong? I feel like it might be a case of a batch of bad fuel, but I'll have to wait until I empty this tank to verify that. Car is stock except for a high flow air filter.

Here are two datalogs that might help:

https://datazap.me/u/rb28dett/low-iam-1?log=0&data=1-13
https://datazap.me/u/rb28dett/low-iam-2?log=0&data=1-10

Many thanks in advance for any help

I might try re-flashing the stage 1 tune again and seeing if anything changes.

EDIT: Something a little odd to me as well. My car is a MY15 MT FRS with a calibration ID of ZA1JD00C, but on the OFT website there's no matching tune. The only file for JD00C is for a MY14 (not 15) which is what I've flashed. I'm not sure if that is what is causing the issues. Also I've never been able to get FFS to work (it just bounces off the full rev limiter) even though LC works.

Screen shot of my Openflash Manager included as an attachment.

I flashed the ROM with FW version 1.51, but the OFT just updated itself to 1.53. I'm not sure what the changes are between them and if I should re-flash.

Sent from my Pixel XL using Tapatalk

08-07-2018, 11:26 PM	#1
localhost Member Join Date: Jun 2018 Drives: Edelbrock SC 2015 FR-S 6MT Location: Calgary, AB Posts: 67 Thanks: 18 Thanked 25 Times in 17 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Car seems to be pulling timing with OFT v4.03 Stg1 Hello folks, I've flashed the OFT v4.03 ROM onto my car about a month ago and been daily driving it since. I've only recently started to datalog because the butt-dyno said things felt a little off. I checked my IAM today and it was pegged at 0.56 the whole time. I'm seeing knock correction come on at certain times too, plus my LTFT varies between -6.5% and -3.9%. I tried the second gear run from ~2000 rpm to about 7000rpm at ~30% throttle hoping I could get the IAM up a little, but saw no chance. I also saw knock correction kick on around 3000rpm during that run. I did see IAM at around 0.76 last night, but I can't be 100% sure. Even after a restart of the car, the IAM stays at 0.56 - which is expected behaviour from reading other threads. I'm using Shell 91 in Canada. The car definitely feels slower and less responsive than stock to me. Any idea what might be wrong? I feel like it might be a case of a batch of bad fuel, but I'll have to wait until I empty this tank to verify that. Car is stock except for a high flow air filter. Here are two datalogs that might help: https://datazap.me/u/rb28dett/low-iam-1?log=0&data=1-13 https://datazap.me/u/rb28dett/low-iam-2?log=0&data=1-10 Many thanks in advance for any help I might try re-flashing the stage 1 tune again and seeing if anything changes. EDIT: Something a little odd to me as well. My car is a MY15 MT FRS with a calibration ID of ZA1JD00C, but on the OFT website there's no matching tune. The only file for JD00C is for a MY14 (not 15) which is what I've flashed. I'm not sure if that is what is causing the issues. Also I've never been able to get FFS to work (it just bounces off the full rev limiter) even though LC works. Screen shot of my Openflash Manager included as an attachment. I flashed the ROM with FW version 1.51, but the OFT just updated itself to 1.53. I'm not sure what the changes are between them and if I should re-flash. Attached Images Last edited by localhost; 08-08-2018 at 10:26 PM.

08-10-2018, 01:01 AM	#5
vin08 275/1000 Join Date: Jul 2016 Drives: 2016 RS2 auto Location: socal Posts: 38 Thanks: 6 Thanked 5 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	yeah. seem like the my car is not as responsive with the 4.0 stage 2 plus update. I am thinking switching back to the older Stage 2OFH v1.0. Steve, Is there a 4.0 stage for the openflash headers I can download? __________________ 275/1000

08-10-2018, 03:38 PM	#7
Ultramaroon 義理チョコ Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,862 Thanks: 52,117 Thanked 36,510 Times in 18,915 Posts Mentioned: 1106 Post(s) Tagged: 9 Thread(s)	[jack]Best username ever.[/jack] __________________ service manuals

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Installed STG1 OFT , whats next?	FR-Sky	Software Tuning	3	06-27-2016 02:58 AM
WTB: innovate stg1 supercharger	jflogerzi	Want-To-Buy Requests	0	11-24-2014 10:35 PM
Visconti Tuning Vortech STG1 & STG1+ Supercharger Kits!	Visconti	Forced Induction	67	04-03-2013 03:56 PM
Stock BRZ/FRS vs Visconti STG1 e85 !	Visconti	Engine, Exhaust, Transmission	46	02-11-2013 11:48 PM
Perrin STG1 tune	Celica00	Engine, Exhaust, Transmission	125	10-19-2012 11:59 PM

08-08-2018, 02:04 AM	#2
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,998 Thanks: 1,035 Thanked 4,987 Times in 2,981 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	Yes with 91 fuel on v4 tunes the iam is unlikely to ever be 1 and you will always have some knock I could modify tune for you to run better on 91 Message me if your interested

08-08-2018, 10:05 PM	#3
Pixeld303 Junior Member Join Date: May 2018 Drives: Sorta stock Location: Mid Atlantic Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Just a quick note. You didn't blur out the S/N on the top

08-15-2018, 09:27 AM	#10
iFunner Member Join Date: Dec 2011 Drives: 2016 Toyota 86 Location: Toronto/KW Posts: 42 Thanks: 8 Thanked 15 Times in 7 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Is it always better to run 93+ on Stage 1 on 4.03 to reduce knock?

08-15-2018, 11:14 AM	#11
localhost Member Join Date: Jun 2018 Drives: Edelbrock SC 2015 FR-S 6MT Location: Calgary, AB Posts: 67 Thanks: 18 Thanked 25 Times in 17 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I'm also a little curious as to what kind of power loss there is between running 93+ and just 91 on these tunes. Especially if the car is pulling 30% of the timing at 91.

User Name		Remember Me?
Password