DIY Rom tuning for exhaust pops and backfires W/ romraider - Page 21 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

eddieflyinv · 02-17-2016, 10:30 PM

Quote:

Originally Posted by ZHoward

well i open stg 2 file and there are no 176 option and no overrun option....

[IMG]

[/IMG]

i just checked an OFT 700C Stage 2 rom and its there,
make sure to use the appropriate OFT Defs from here for your calid
http://www.ft86club.com/forums/showp...&postcount=411

the OFT Zip files is what youre looking for, and just the right one for your calid.

just confirming you do use OFT to flash ? and what is your calid?

shaynek · 02-18-2016, 02:28 PM

did you guys change the values for 7600 rpm? My 91 only went up to 7400. now my e85 goes up to 7600

ZHoward · 02-18-2016, 02:33 PM

Just test stg2 UEL on my car, there are pops between 2500 to 3000rpm, but if I go over than that, no pops... Borla v2 UEL, Motiv HFC front pipe, invidia N1

Sent from my iPhone using Tapatalk

_gt86_user · 02-18-2016, 03:55 PM

Quote:

Originally Posted by ZHoward

Just test stg2 UEL on my car, there are pops between 2500 to 3000rpm, but if I go over than that, no pops... Borla v2 UEL, Motiv HFC front pipe, invidia N1

Sent from my iPhone using Tapatalk

Yup that sounds about right, as I recall a few people saying they couldn't get anything above 3500rpm usually.

Maggie_Mullen · 02-18-2016, 04:18 PM

that really great man thanks for the info and video. Great stuff really.

eddieflyinv · 02-18-2016, 10:47 PM

Quote:

Originally Posted by ZHoward

Just test stg2 UEL on my car, there are pops between 2500 to 3000rpm, but if I go over than that, no pops... Borla v2 UEL, Motiv HFC front pipe, invidia N1

Sent from my iPhone using Tapatalk

Same here so far.. Probably gotta play with either the resume setting or the counters... Havent gone into it much yet, but on shifts I get some decent crackles above 3500 rpm

Quote:

Originally Posted by _gt86_user

Yup that sounds about right, as I recall a few people saying they couldn't get anything above 3500rpm usually.

Sent from my LG-H812 using Tapatalk

denso · 02-22-2016, 02:19 PM

Hi, what about this?

Overrun Fueling RPM Resume Threshold will rich out the AFR from 7000rpm.
Base Timing Idle (In-Gear)(Above Threshold) will retard the ignition until 1000rpm.

This should bang-bang until 1000rpm if you just lift your foot.

ort895 · 02-22-2016, 03:16 PM

Quote:

Originally Posted by denso

Hi, what about this?

Overrun Fueling RPM Resume Threshold will rich out the AFR from 7000rpm.
Base Timing Idle (In-Gear)(Above Threshold) will retard the ignition until 1000rpm.

This should bang-bang until 1000rpm if you just lift your foot.

Hmmm
Try it out

denso · 02-22-2016, 03:19 PM

Yea I will but my car is logged out atm until march....

damn winters in germany

ZHoward · 02-22-2016, 07:00 PM

Quote:

Originally Posted by denso

Hi, what about this?

Overrun Fueling RPM Resume Threshold will rich out the AFR from 7000rpm.
Base Timing Idle (In-Gear)(Above Threshold) will retard the ignition until 1000rpm.

This should bang-bang until 1000rpm if you just lift your foot.

Is that safe？

Sent from my iPhone using Tapatalk

denso · 02-22-2016, 07:19 PM

I dont know, I didnt test it yet.

This should be the tables we are looking for in my opinion. It seems logical.

I'll try it if I get my car back out of its sleep.

I talked to a friend of mine (MTR Performance, check out at facebook!)
Hes very good at VAG Software (Audi TTRS, Golf 6R/7R,...)

VW Golf 7R e.g. are using this kind of overrun settings and the cars are sounding great at decelleration.

ort895 · 02-22-2016, 08:12 PM

Quote:

Originally Posted by denso

I dont know, I didnt test it yet.

This should be the tables we are looking for in my opinion. It seems logical.

I'll try it if I get my car back out of its sleep.

I talked to a friend of mine (MTR Performance, check out at facebook!)
Hes very good at VAG Software (Audi TTRS, Golf 6R/7R,...)

VW Golf 7R e.g. are using this kind of overrun settings and the cars are sounding great at decelleration.

Go go go, make it sound like an f type

VeilSide · 02-27-2016, 01:28 PM

The overrun function is working perfectly. Just set the RPM delta to -10 or whatever and set a desired angle in the Base Timing Idle (in gear) table.

Unfortunately it seems that the pops and bangs trigger the knock sensor and the IAM is constantly kept at 0

eddieflyinv · 02-27-2016, 08:01 PM

Quote:

Originally Posted by VeilSide

The overrun function is working perfectly. Just set the RPM delta to -10 or whatever and set a desired angle in the Base Timing Idle (in gear) table.

Unfortunately it seems that the pops and bangs trigger the knock sensor and the IAM is constantly kept at 0

Weird, i never had any knock due to this, with all kinds of different setting combos :/
IAM steady @ 1 after a couple hundred kms

Sent from my LG-H812 using Tapatalk

02-22-2016, 02:19 PM	#287
denso Member Join Date: Feb 2014 Drives: 86 Location: Germany Posts: 84 Thanks: 56 Thanked 18 Times in 16 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Hi, what about this? Overrun Fueling RPM Resume Threshold will rich out the AFR from 7000rpm. Base Timing Idle (In-Gear)(Above Threshold) will retard the ignition until 1000rpm. This should bang-bang until 1000rpm if you just lift your foot. Last edited by denso; 02-22-2016 at 02:36 PM.

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02-18-2016, 02:28 PM	#282
shaynek Senior Member Join Date: Oct 2013 Drives: BRZ Limited; GR86 Location: Nor cal Posts: 316 Thanks: 93 Thanked 81 Times in 59 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	did you guys change the values for 7600 rpm? My 91 only went up to 7400. now my e85 goes up to 7600

02-18-2016, 02:33 PM	#283
ZHoward Senior Member Join Date: Feb 2015 Drives: 2013 brz limited Location: LA 626 area Posts: 266 Thanks: 59 Thanked 33 Times in 24 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Just test stg2 UEL on my car, there are pops between 2500 to 3000rpm, but if I go over than that, no pops... Borla v2 UEL, Motiv HFC front pipe, invidia N1 Sent from my iPhone using Tapatalk

02-18-2016, 04:18 PM	#285
Maggie_Mullen Junior Member Join Date: Feb 2016 Drives: Subur / Scion Location: US Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	that really great man thanks for the info and video. Great stuff really.

02-22-2016, 03:19 PM	#289
denso Member Join Date: Feb 2014 Drives: 86 Location: Germany Posts: 84 Thanks: 56 Thanked 18 Times in 16 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Yea I will but my car is logged out atm until march.... damn winters in germany

02-22-2016, 07:19 PM	#291
denso Member Join Date: Feb 2014 Drives: 86 Location: Germany Posts: 84 Thanks: 56 Thanked 18 Times in 16 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I dont know, I didnt test it yet. This should be the tables we are looking for in my opinion. It seems logical. I'll try it if I get my car back out of its sleep. I talked to a friend of mine (MTR Performance, check out at facebook!) Hes very good at VAG Software (Audi TTRS, Golf 6R/7R,...) VW Golf 7R e.g. are using this kind of overrun settings and the cars are sounding great at decelleration.

02-27-2016, 01:28 PM	#293
VeilSide Member Join Date: Feb 2016 Drives: GT86 Location: Germany Posts: 27 Thanks: 5 Thanked 4 Times in 4 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	The overrun function is working perfectly. Just set the RPM delta to -10 or whatever and set a desired angle in the Base Timing Idle (in gear) table. Unfortunately it seems that the pops and bangs trigger the knock sensor and the IAM is constantly kept at 0

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