Ok since im missing both O2 sensors, and can't find a timely replacement, is it possible to tune in open loop?
I'm running an emanage & 450cc injectors, and am missing the O2 sensors from the manifold and the one after the cat.
Tuning will be done on a dyno mostly.
I don't see why I couldn't because I could use the E-manage to tune out the extra fuel, and alter the open loops preset curves...
Anybody got any information against this?
Anybody have experience?
Am I crazy?
Tuning with No O2 Sensors
Without any 02s and the ECU going into open loop mode, you'll be pulling out a lot of fuel that won't need to be pulled out once the ECU is recieving and 02 signal. Then you're basically back to square one--a car that needs more tuning.
Most manufacturers program the ECUs to run excessively rich when no 02 signal is present to prevent any damage.
Might want to wait until you get the 02s back into the car.
Most manufacturers program the ECUs to run excessively rich when no 02 signal is present to prevent any damage.
Might want to wait until you get the 02s back into the car.
I really need a reason. Otherwise I really can't see why it wouldn't work. With just some timing retard and taking out some fuel on the curve im able to get it to idle better even without the o2 sensors...
What I meant was at the dyno using a wide band, with the ecu in open loop, and me running zero oxygen sensors. The wide band will only be there to tune it.
Is it possible to make it run right tuning on a wide band and not using any o2 sensors?
What I meant was at the dyno using a wide band, with the ecu in open loop, and me running zero oxygen sensors. The wide band will only be there to tune it.
Is it possible to make it run right tuning on a wide band and not using any o2 sensors?
Do what you want, but you might want to look into what parameters Nissan put into the stock ECU as to how it reacts without any input from the 02 sensors. I have never gotten to see code, but if it's like a lot of other manufacturers, the ECU will not only dump fuel, but retard timing like crazy.
You're not reinventing the wheel by thinking it's a "good idea" to run a stock ECU car without 02 sensors, and tuning while the ECU is in "limp mode".
What you're trying to do is possible with a lot of standalones (although not always the best approach) however, manufacturers put a lot of effort into a code that the ECU switches to when it's in open loop to prevent the motor from toasting itself.
I say if this isn't a good enough reason, then go for it, it's your motor and money wasted, not mine. Let us know how you make out.
You're not reinventing the wheel by thinking it's a "good idea" to run a stock ECU car without 02 sensors, and tuning while the ECU is in "limp mode".
What you're trying to do is possible with a lot of standalones (although not always the best approach) however, manufacturers put a lot of effort into a code that the ECU switches to when it's in open loop to prevent the motor from toasting itself.
I say if this isn't a good enough reason, then go for it, it's your motor and money wasted, not mine. Let us know how you make out.
That is just a better explination of what you explained earlier :pface ...
I broke down and bought the front O2 sensor to atleast let the ecu run in closed loop. Im my neck of the woods the only place to get the O2 sensor is the dealer, and it costs 200$
We'll see how it goes tomarrow.
KA24DE-TE-manage450cc injectors
I broke down and bought the front O2 sensor to atleast let the ecu run in closed loop. Im my neck of the woods the only place to get the O2 sensor is the dealer, and it costs 200$
We'll see how it goes tomarrow.
KA24DE-TE-manage450cc injectors