Knock fix with Australian Fuel 98/100 RON - Page 21 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Wayno · 12-15-2014, 06:30 PM

Quote:

Originally Posted by Nardi330

this is my log on Stg2 UEL OFT (unmodified). any comment? thx

http://www.datazap.me/u/nardi330/nov...1-2-4-5-8-9-10

It looks exactly like every other log from an unmodified tune with the same hardware. There are tunes uploaded on this very thread you can copy and paste from to fix the knock. Also you don't need accel pedal and throttle, you should add engine load back in.

Nardi330 · 12-15-2014, 06:33 PM

Quote:

Originally Posted by s2d4

Knock city, can't look deeper as on phone but loads of flkc.
IAM still at 1 so not too bad.

Quote:

Originally Posted by Wayno

It looks exactly like every other log from an unmodified tune with the same hardware. There are tunes uploaded on this very thread you can copy and paste from to fix the knock. Also you don't need accel pedal and throttle, you should add engine load back in.

thanks.

Wayno · 12-15-2014, 06:38 PM

Quote:

Originally Posted by Nardi330

thanks.

Try this

Nardi330 · 12-15-2014, 06:54 PM

Quote:

Originally Posted by Wayno

Try this

thanks Wayno.

just looking at the thread, it seems V Power is sh17. i guess i should try redo my log using Ultimate then adjust my rom accordingly?

Wayno · 12-15-2014, 07:20 PM

You should adjust your tune in the worst fuel and conditions then worry about better fuel.

Nardi330 · 12-15-2014, 07:29 PM

Quote:

Originally Posted by Wayno

You should adjust your tune in the worst fuel and conditions then worry about better fuel.

true. can't argue with this lol

s2d4 · 12-15-2014, 09:54 PM

Quote:

Originally Posted by Nardi330

true. can't argue with this lol

Got access to E85?

steve99 · 12-15-2014, 11:02 PM

Quote:

Originally Posted by Nardi330

this is my log on Stg2 UEL OFT (unmodified). any comment? thx

http://www.datazap.me/u/nardi330/nov...1-2-4-5-8-9-10

looks like the same log you pm'ed me ?

Fuel trims high 10% check for intake exhaust leaks then a bit of maf scaling might be needed or cleaning maf if you have oiled filter.

yes bit of knock top end , pull some timing for out crappy fuels as per @Wayno timing map.

steve99 · 12-16-2014, 12:44 AM

Quote:

Originally Posted by s2d4

Got access to E85?

I forget how bad our fuel and the stock tune is

Guy with stock car came over a few days ago running 98 ron on stock tune

IAM = 0.51

"converted him to E85"

s2d4 · 12-16-2014, 01:02 AM

Quote:

Originally Posted by steve99

I forget how bad our fuel and the stock tune is

Guy with stock car came over a few days ago running 98 ron on stock tune

IAM = 0.51

"converted him to E85"

Haha, right on.

Nardi330 · 12-16-2014, 01:02 AM

Quote:

Originally Posted by steve99

looks like the same log you pm'ed me ?

Fuel trims high 10% check for intake exhaust leaks then a bit of maf scaling might be needed or cleaning maf if you have oiled filter.

yes bit of knock top end , pull some timing for out crappy fuels as per @Wayno timing map.

yes same log which i pmed u. thanks.

Quote:

Originally Posted by s2d4

Got access to E85?

unfortunately too far from home/work.

steve99 · 01-03-2015, 06:29 PM

Interesting read here on another type of knock control

Pre-emptive Feedback knock control PEKC

http://www.romraider.com/forum/viewtopic.php?t=8509

If Unknown Value(Could be delta load or MAFV) Value is greater than 0.25
could also be a throttle % delta and rapid rise in IAT
or
If RPM is greater than 1700
or
If RPM is less than 4400
or
if load is greater than 0.799
or
if load is less than 2.8
or
if primary ol enrichment is less than 1 (AFR 14.7)
or
if coolant temp is greater than 78 degrees c
then
PEKC is active

seems to be where we get "tip in knock"

Kodename47 · 01-04-2015, 04:03 AM

Quote:

Originally Posted by steve99

Interesting read here on another type of knock control

Pre-emptive Feedback knock control PEKC

http://www.romraider.com/forum/viewtopic.php?t=8509

If Unknown Value(Could be delta load or MAFV) Value is greater than 0.25
could also be a throttle % delta and rapid rise in IAT
or
If RPM is greater than 1700
or
If RPM is less than 4400
or
if load is greater than 0.799
or
if load is less than 2.8
or
if primary ol enrichment is less than 1 (AFR 14.7)
or
if coolant temp is greater than 78 degrees c
then
PEKC is active

seems to be where we get "tip in knock"

I don't think those ROMs had transient ignition retardation tables. I've read that thread before and came to the conclusion it's older logic. However, you could test it by changing the FBKC values as some have in that thread.

Nardi330 · 01-04-2015, 10:39 PM

quick questions regarding rescaling MAF using the tool developed by Kodename47 (thanks for creating the tool).

this is my first time doing this so sorry with the noob questions.

I have been reading the "usage" tab but i'm not sure how to use the tool.

- what is the "new maximum desired voltage" and "new minimum voltage"? how should i determine what values to use for these?

- "paste original MAF scale into the top table" means putting the value as the "MAF sensor scaling" inside the rom?

thanks in advance.

12-15-2014, 07:20 PM	#285
Wayno Senior Member Join Date: Apr 2014 Drives: Toyota 86 GTS Location: Australia Posts: 1,129 Thanks: 453 Thanked 895 Times in 424 Posts Mentioned: 211 Post(s) Tagged: 0 Thread(s)	You should adjust your tune in the worst fuel and conditions then worry about better fuel. __________________ rom downloads, information and examples Toyota 86 GTS OFT - Guide To Dialling In OTS Base Tune OFT - Example Alternate Maps for AT, 98RON, E85, MAF Scales

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01-03-2015, 06:29 PM	#292
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)	Interesting read here on another type of knock control Pre-emptive Feedback knock control PEKC http://www.romraider.com/forum/viewtopic.php?t=8509 If Unknown Value(Could be delta load or MAFV) Value is greater than 0.25 could also be a throttle % delta and rapid rise in IAT or If RPM is greater than 1700 or If RPM is less than 4400 or if load is greater than 0.799 or if load is less than 2.8 or if primary ol enrichment is less than 1 (AFR 14.7) or if coolant temp is greater than 78 degrees c then PEKC is active seems to be where we get "tip in knock"

01-04-2015, 10:39 PM	#294
Nardi330 Senior Member Join Date: Sep 2011 Drives: 86 Location: Brisbane Australia Posts: 2,168 Thanks: 287 Thanked 374 Times in 264 Posts Mentioned: 9 Post(s) Tagged: 1 Thread(s)	quick questions regarding rescaling MAF using the tool developed by Kodename47 (thanks for creating the tool). this is my first time doing this so sorry with the noob questions. I have been reading the "usage" tab but i'm not sure how to use the tool. - what is the "new maximum desired voltage" and "new minimum voltage"? how should i determine what values to use for these? - "paste original MAF scale into the top table" means putting the value as the "MAF sensor scaling" inside the rom? thanks in advance.

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