Advice for stable AFR
11-19-2014, 10:56 PM
#1
New Member
Thread Starter
Advice for stable AFR
Hello Z Community. As the title already says it, i'd like to ask you guys for a helpful advice setting my AFR more stable, on a 2008 Euro 350Z, VQ35HR engine.
I purchased the Osiris Tuner Version and started to tune the car on the street, as i live near Germany i do use often the "autobahn" which means highway without speed restrictions. Ideal for some power pulls. The achievements until now, running with 100 octane premium fuel, is a stable IGN timing at 34-35° pedal to the metal, improved response at higher rpm's, but AFR descending from 12.9 to 12.3 on the way to highest rpm. I think there should be a possibility of taking it to12.8/12.9 all the way. I'm logging it via Cipher - Using Stock AFR Sensors
The mods on the car (engine side) are rather small, just a set of K&N drop in filter and a 5 Zigen Cat Back Pro Racer SP Exhaust.
I tried to work on these essential maps until now: K-Line Fuel Multiplier, Fuel Map, Ignition Timing. Some other maps as well, but that are not influental on the setting ( v-max, etc... )
I have 2 ideas, maybe to alter the MAF Sensor Scale Map or to work on the Fuel Compensation Map. But honestly i don't have a clue how to work on the Fuel Compensation table.. All you see is "Data Byte" numbers and i don't know what the heck this is or how it can affect AFR procedure...
Happy for any kind of advice from people with expierience in that case. I can also share my map, i'm doing this for me, not for business use.
Thanks!
I purchased the Osiris Tuner Version and started to tune the car on the street, as i live near Germany i do use often the "autobahn" which means highway without speed restrictions. Ideal for some power pulls. The achievements until now, running with 100 octane premium fuel, is a stable IGN timing at 34-35° pedal to the metal, improved response at higher rpm's, but AFR descending from 12.9 to 12.3 on the way to highest rpm. I think there should be a possibility of taking it to12.8/12.9 all the way. I'm logging it via Cipher - Using Stock AFR Sensors
The mods on the car (engine side) are rather small, just a set of K&N drop in filter and a 5 Zigen Cat Back Pro Racer SP Exhaust.
I tried to work on these essential maps until now: K-Line Fuel Multiplier, Fuel Map, Ignition Timing. Some other maps as well, but that are not influental on the setting ( v-max, etc... )
I have 2 ideas, maybe to alter the MAF Sensor Scale Map or to work on the Fuel Compensation Map. But honestly i don't have a clue how to work on the Fuel Compensation table.. All you see is "Data Byte" numbers and i don't know what the heck this is or how it can affect AFR procedure...
Happy for any kind of advice from people with expierience in that case. I can also share my map, i'm doing this for me, not for business use.
Thanks!
Last edited by Euro_Z33; 11-19-2014 at 11:09 PM.
11-22-2014, 07:23 PM
#3
Registered User
Join Date: Apr 2014
Location: WI
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Hello Z Community. As the title already says it, i'd like to ask you guys for a helpful advice setting my AFR more stable, on a 2008 Euro 350Z, VQ35HR engine.
I purchased the Osiris Tuner Version and started to tune the car on the street, as i live near Germany i do use often the "autobahn" which means highway without speed restrictions. Ideal for some power pulls. The achievements until now, running with 100 octane premium fuel, is a stable IGN timing at 34-35° pedal to the metal, improved response at higher rpm's, but AFR descending from 12.9 to 12.3 on the way to highest rpm. I think there should be a possibility of taking it to12.8/12.9 all the way. I'm logging it via Cipher - Using Stock AFR Sensors
The mods on the car (engine side) are rather small, just a set of K&N drop in filter and a 5 Zigen Cat Back Pro Racer SP Exhaust.
I tried to work on these essential maps until now: K-Line Fuel Multiplier, Fuel Map, Ignition Timing. Some other maps as well, but that are not influental on the setting ( v-max, etc... )
I have 2 ideas, maybe to alter the MAF Sensor Scale Map or to work on the Fuel Compensation Map. But honestly i don't have a clue how to work on the Fuel Compensation table.. All you see is "Data Byte" numbers and i don't know what the heck this is or how it can affect AFR procedure...
Happy for any kind of advice from people with expierience in that case. I can also share my map, i'm doing this for me, not for business use.
Thanks!
I purchased the Osiris Tuner Version and started to tune the car on the street, as i live near Germany i do use often the "autobahn" which means highway without speed restrictions. Ideal for some power pulls. The achievements until now, running with 100 octane premium fuel, is a stable IGN timing at 34-35° pedal to the metal, improved response at higher rpm's, but AFR descending from 12.9 to 12.3 on the way to highest rpm. I think there should be a possibility of taking it to12.8/12.9 all the way. I'm logging it via Cipher - Using Stock AFR Sensors
The mods on the car (engine side) are rather small, just a set of K&N drop in filter and a 5 Zigen Cat Back Pro Racer SP Exhaust.
I tried to work on these essential maps until now: K-Line Fuel Multiplier, Fuel Map, Ignition Timing. Some other maps as well, but that are not influental on the setting ( v-max, etc... )
I have 2 ideas, maybe to alter the MAF Sensor Scale Map or to work on the Fuel Compensation Map. But honestly i don't have a clue how to work on the Fuel Compensation table.. All you see is "Data Byte" numbers and i don't know what the heck this is or how it can affect AFR procedure...
Happy for any kind of advice from people with expierience in that case. I can also share my map, i'm doing this for me, not for business use.
Thanks!
Thread
Thread Starter
Forum
Replies
Last Post
liqalu04
Engine & Drivetrain
31
01-02-2022 12:58 PM
Colombo
Forced Induction
35
11-09-2020 10:27 AM
Extreme Dimensions
Southern California
0
09-24-2015 03:35 PM