Alfa Mito 1.4 Tjet 155hp Elimination of a lambda probe

[giannimini]

The turbo pressure will not be? to zero at the same value of the first creed, as well as advances. While the mixture is ingrasser? a lot and not sar? pi? variable based on the values of the temperature of the air, etc... Just because? ? the first probe to give these values to the control unit. So I think that the first probe fails, it means the fuel mixture fixed. Ditto for the second probe. For?: from what I know the pina probe adjusts the fuel mixture while the second checks to see if the cat ? affixed. If you cancel the second control unit, the values will always be variables, why? the first one works. While if you undo the first no.

I hope I have not said a pile of crap, but in principle and for most of the cars on the speech ? this.

[sergiot]

the first probe is used to adjust the fuel mixture so that the catalyst functions in an optimal way.
the second one is only to the diagnosis of the catalyst.
if the first probe is blocked, the car works with all the other parameters and sensors that remain, only that they are not correct for the aging is done to ensure proper operation of the catalyst. also is not guaranteed that the washing of the tank.
this does not mean that the car must go evil that the performance change.

[giannimini]

So that the cat works in an optimal manner, it means that to make a fuel mixture 14.1 so if you disable it will not be? pi? automatic thing but he must also manage the map once and for always, and then if you change time c'? wind humidity? etc dc avr? always the same map, then you lose the autoadattivita right?

Another thing, when we modify the tables of the injection, the autoadattivita goes to always change to the regular 14.1? In short, from the map by increasing the values of injection for wanting to make a fuel mixture close to the 13.1 or even 12.1 you must disable to force both of the probes, or just say to the autoadattivita of grease all over the map (assuming that you can do) I hope I did understand :-)

[sergiot]

So that the cat works in an optimal manner, it means that to make a fuel mixture 14.1 so if you disable it will not be? pi? automatic thing but he must also manage the map once and for always, and then if you change time c'? wind humidity? etc dc avr? always the same map, then you lose the autoadattivita right?

Another thing, when we modify the tables of the injection, the autoadattivita goes to always change to the regular 14.1? In short, from the map by increasing the values of injection for wanting to make a fuel mixture close to the 13.1 or even 12.1 you must disable to force both of the probes, or just say to the autoadattivita of grease all over the map (assuming that you can do) I hope I did understand :-)

the lambda control works as you described.
if the probe ? disabled normal maps fuel build up equally the same fuel mixture stoichiometric.
only that for this to work well, the catalyst requires a stoichiometric ratio with a precision that only the maps fail to give if not c'? the probe that corrects.
to work on carburetion just keep in mind that the only probe to the front adjusts the fuel mixture

other rafinatezze on the lambda control then depend on which type of probe ? used, if the classical on-off or linear.

[giannimini]

Therefore, you're telling me, if I decide to fatten the fuel mixture of my car. In addition to working on the time/amount? injection, should I disable also the first lambda probe why? senn? the fuel mixture would be always the optimal one for the catalyst. In practice, then it does not make sense to increase or decrease these values when the first probe is working, why? do you want or do not want to go? always change the fuel mixture to how to the like to the catalyst right? :-)

[sergiot]

right, if modifici maps of the gas at the end to move the values of the adaptation, but the substance will change? rspetto at the original.
you just need to wait a few days and the probe puts everything in place.

[carmageddon]

Therefore, you're telling me, if I decide to fatten the fuel mixture of my car. In addition to working on the time/amount? injection, should I disable also the first lambda probe why? senn? the fuel mixture would be always the optimal one for the catalyst.

no, absolutely not!

the first probe ? what is pi? useful and ? need to stay active...unless you want to complicate life.

l autoadattativit? you can't take the if you make a change with the policy.

[giannimini]

ok carmageddon, in fact, it was not my intention to recommend a change to the genre.

in the case on my engine bmw psa of my mini with electronic med17 or mev17 I don't remember, I decide to empty the cat. how do you suggest I should do?

of course, I want to leave the first probe.

do you believe that the original unit could settle the mixture equally?

also on the second lambda probe I advice the electric circuit or the minicat to avoid the light?

and again (sorry for the many questions) if I decide not to put any emulator on the second lambda and I'll just reset the light using the obd and I would work with the ecu in openloopo or closedloop don't remember the mode, I'd get better or worse performance to have the cat put.

at the end of the ecu with the accelerator pedal to 100% takes into account the autoadattivit? etc etc, or does work everything to the max not caring about consumption and pollution.

I'd like to shed some light on this topic, why? many on the forums keep saying that removing the cat on the new ecu gives the problems like performance, even if they are convinced of the contrary, a what ? the environment, another ? have a cap real inside the engine hood at 10 cm from the exhaust valves.

what can you tell me about that? if you like, of course, to talk about ;-)

thanks happy holidays to all

[carmageddon]

ok carmageddon, in fact, it was not my intention to recommend a change to the genre.

in the case on my engine bmw psa of my mini with electronic med17 or mev17 I don't remember, I decide to empty the cat. how do you suggest I should do?

of course, I want to leave the first probe.

do you believe that the original unit could settle the mixture equally?

also on the second lambda probe I advice the electric circuit or the minicat to avoid the light?

and again (sorry for the many questions) if I decide not to put any emulator on the second lambda and I'll just reset the light using the obd and I would work with the ecu in openloopo or closedloop don't remember the mode, I'd get better or worse performance to have the cat put.

at the end of the ecu with the accelerator pedal to 100% takes into account the autoadattivit? etc etc, or does work everything to the max not caring about consumption and pollution.

I'd like to shed some light on this topic, why? many on the forums keep saying that removing the cat on the new ecu gives the problems like performance, even if they are convinced of the contrary, a what ? the environment, another ? have a cap real inside the engine hood at 10 cm from the exhaust valves.

what can you tell me about that? if you like, of course, to talk about ;-)

thanks happy holidays to all

which mini do you have?

naturally aspirated or turbo?

when it intervenes electronically to the second probe (diagnostic probe) ? always better to disable it, even in the case of a simple remapping of this ? one of the factors that affect the strategy of the autoadattativit? to move...then via the above-mentioned probe...but the work to perfection should be performed on the file management and not with emulators or the other.

in modern engines there? you are referring to ? the relationship of motor load, group 3 signals fundamental : manifold pressure, measured mass air flow sensor and pedal accelaratore...depending on the state of wear of the sensors has a given motor load (100 if all the sensors are 100% and an average with reference to the value of pi? low if only one of these ? worn or not returns to the ecu an ideal value).

the motors controlled by a probe, wideband have control over the fuel mixture, while those with the probe in narrow-band no...but no matter this fact ? important to tell the ecu what we want from her, and not to be conditioned by what he would do to her.

if you put the hands with cognition, you can do a good job also on the aspirated engines.

[leandro89]

the title speaks of the alfa mito, we try to stick to the topic of the discussion