How To Tune Air Fuel Ratio
How To Tune Air Fuel Ratio
I have installed the Camcon in my IS200 but I do not know how to tune the AFR properly. I do not have any AFR gauge with wideband O2 sensor and I do not know if it really useful to tune the AFR.
Actually, If someone can give the method to tune this AFR it would be nice. Do I need to disable the other O2 sensors to be sure that my new setting is valid? If someone here is a tuner and can help me it would be great for me.
Thanks to all.
Hi,
I have installed the Camcon in my IS200 but I do not know how to tune the AFR properly. I do not have any AFR gauge with wideband O2 sensor and I do not know if it really useful to tune the AFR.
Actually, If someone can give the method to tune this AFR it would be nice. Do I need to disable the other O2 sensors to be sure that my new setting is valid? If someone here is a tuner and can help me it would be great for me.
Thanks to all.
marko45 Hi,
I have installed the Camcon in my IS200 but I do not know how to tune the AFR properly. I do not have any AFR gauge with wideband O2 sensor and I do not know if it really useful to tune the AFR.
Actually, If someone can give the method to tune this AFR it would be nice. Do I need to disable the other O2 sensors to be sure that my new setting is valid? If someone here is a tuner and can help me it would be great for me.
Thanks to all.
Just out of interest, how have you wired the Camcon? I wired mine afew years ago, and just plonked in some settings from the internet that other people used, and it seemed to work ok.
But i'm sure I have since found out I wired the AFR wrong - I think what can be found on the net isnt correct, but I can't be too sure.
marko45 Hi,
I have installed the Camcon in my IS200 but I do not know how to tune the AFR properly. I do not have any AFR gauge with wideband O2 sensor and I do not know if it really useful to tune the AFR.
Actually, If someone can give the method to tune this AFR it would be nice. Do I need to disable the other O2 sensors to be sure that my new setting is valid? If someone here is a tuner and can help me it would be great for me.
Thanks to all.
Just out of interest, how have you wired the Camcon? I wired mine afew years ago, and just plonked in some settings from the internet that other people used, and it seemed to work ok.
But i'm sure I have since found out I wired the AFR wrong - I think what can be found on the net isnt correct, but I can't be too sure.
I just switch on the car, stay at idle and tune the camcon until i read 14.7:1 on the gauge?
My problem is the method for tuning the afr !
Regarding the wiring, here it is (my Lexus is a 2000 IS200):
Camcon wire -> ECU wire
IG power (red) -> IGSW (A9)
RPM+ (green) -> NE+ (E23)
RPM- (light blue) -> NE- (E22)
VVT-i (peach/purple) -> G2 (E10)
A/F (brown/orange) -> PIM (D9)
Jon, could you give the settings you had.
OK for the gauge but how do I set up the AFR???
I just switch on the car, stay at idle and tune the camcon until i read 14.7:1 on the gauge?
My problem is the method for tuning the afr !
Regarding the wiring, here it is (my Lexus is a 2000 IS200):
Camcon wire -> ECU wire
IG power (red) -> IGSW (A9)
RPM+ (green) -> NE+ (E23)
RPM- (light blue) -> NE- (E22)
VVT-i (peach/purple) -> G2 (E10)
A/F (brown/orange) -> PIM (D9)
Jon, could you give the settings you had.
What do I have to use to monitor the afr through the rev range? Of course I have to install a wideband O2 sensor like the AEM one but what else do I need do log the data in order to make a chart afr=f(rev range)?
Is it possible to make that with a wideband O2 sensor kit?
Not a bad idea jj260z. But if I knew what to do I would not ask.
What do I have to use to monitor the afr through the rev range? Of course I have to install a wideband O2 sensor like the AEM one but what else do I need do log the data in order to make a chart afr=f(rev range)?
Is it possible to make that with a wideband O2 sensor kit?
You need it plugged into a data logging laptop with software which will show you on graphs what your AFR is doing throughout the rpm range.
I'm pretty clued up when it comes to electronics and computers etc. But I wouldn't be changing my own AFR settings without at least having someone there who knows more about it.
sprinter2012
08-08-2019, 02:58 AM #7To properly tune the AFR you can't rely on just watching an AFR guage as that only gives live info for the exact moment in time you're looking.
You need it plugged into a data logging laptop with software which will show you on graphs what your AFR is doing throughout the rpm range.
I'm pretty clued up when it comes to electronics and computers etc. But I wouldn't be changing my own AFR settings without at least having someone there who knows more about it.
You need a way of detecting knock (det cans are the most basic), measuring and logging AFR's via a wideband sensor (a gauge isn't sufficient) as well as a whole host of other bits and bobs to do a proper job.
By all means have a go - as that's how you learn, but bare in mind the damage you could do will cost a heck of a lot more than sending it to a pro for a tune would cost.
speedfreek
08-08-2019, 03:13 AM #9To properly map a car takes a lot of skill and patience and know how - a novice WILL destroy an engine.
You need a way of detecting knock (det cans are the most basic), measuring and logging AFR's via a wideband sensor (a gauge isn't sufficient) as well as a whole host of other bits and bobs to do a proper job.
By all means have a go - as that's how you learn, but bare in mind the damage you could do will cost a heck of a lot more than sending it to a pro for a tune would cost.
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