O2 sensor simulator

Lumix

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hi guys... does Emanage able to alter the O2 sensor signal? or do I have to get an O2 simulator for this?

My car with the emanage was ok after the ecu reset, but after a week or two of driving (I seldom drive it) seem like it went back to the original ecu setting :confused: or even worst, car was lack of power and hesitated but it will back to normal after i reset the ECU... then a week or two problem came back again!

as I know, although the EMS has given a modified A/F signal to the ecu but the ecu will compare the A/F signal with the O2 signal, if those don't match up, ecu will modify the signal to ensure parameters are as per standard spec. so if without alter thoses O2 signal given to the ecu the EMS A/F signal will be overrided by the ecu to ensure closed loop target ratio of 14.7 up to 50% throttle opening. is it true? anyone?
 
Lumix said:
hi guys... does Emanage able to alter the O2 sensor signal? or do I have to get an O2 simulator for this?

My car with the emanage was ok after the ecu reset, but after a week or two of driving (I seldom drive it) seem like it went back to the original ecu setting :confused: or even worst, car was lack of power and hesitated but it will back to normal after i reset the ECU... then a week or two problem came back again!

as I know, although the EMS has given a modified A/F signal to the ecu but the ecu will compare the A/F signal with the O2 signal, if those don't match up, ecu will modify the signal to ensure parameters are as per standard spec. so if without alter thoses O2 signal given to the ecu the EMS A/F signal will be overrided by the ecu to ensure closed loop target ratio of 14.7 up to 50% throttle opening. is it true? anyone?


Sorry, bro..

What car r u driving? I was also considering on getting the E-manage and was told cannot fit in a 4G93. because of Check Engine problem.

[email protected]
 
a piggy back lies to the ecu about the input value from the sensor.. the ecu itself has a preset value of its own.. when u alter the fuel mapping.. it will change for a while.. and as u drive on for few day.. the ecu is getting feedback from the sensors.. i.e O2Sensor.. if it detect a lean mixture.. it will compensate.. hence.. making ur setting different.. O2Sim lies to the ecu saying that it's running at the same mixture all the time.. even if u alter the fuel mapping.. it will say the same thing to the ecu.. from what i have experiance and read about.. it would be adviseable for u to get the O2Simulator.. it's make tunning much simpler... I'm using 1 myself.. works great. :)
 
pagasetta,
Correct me if i'm wrong The O2Sim lies to the ECU by telling the ECU that it is at stoich. The ECU will run close loop and it will `use' the altered fuel map. Does e-Manage provide the O2 value for various type of car?
 
Zaki, I think we read the same bibble... huhuh.. couldnt aggree with you more.. The e-manage (blue) does not not control the O2 value for the vehicle.. not in it's main function.. but there is an optional gadget where u can buy from the net ( http://www.mohdparts.com/emanage/#E-MANAGE%20BLUE ) where by.. it disable the O2 sensor signal input above a settable rpm range. Apart from that, if anybody have a background on electronics.. they can just built an O2Sim for themself.. safe a lot of $$.. I did mine on my own.. and it works great.. dive into DIY world people.. :)
 
pagasseta said:
they can just built an O2Sim for themself.. safe a lot of $$.. I did mine on my own.. and it works great.. dive into DIY world people.. :)
that's cool :). glad to know that someone has done it. how do you know the ECU's target AFR/voltage? did you know beforehand or did you check the voltage when the engine is idling?
 
Well.. i did tap in to the o2 sensor and monitor it using my laptop.. kindda like a data logging.. it's hard to get the factory data.. so i just monitor it.. idlling, the voltage would go up and down.. since the ecu is trying to get the right mixture... cruising.. is the same thing.. except the value change much faster.. and at wot.. you'll get a much steady reading.. from there i use the figure to do my o2sim.. i.e simulator works for my car.. but on others.. i dont know yet.. since every data is collected on my machine.. would be nice if i can get a feed back from others.. i.e different car..
 
FWIK, for a 1V O2 sensor, the ECU will look for 0.45 V with some tolerance to the target voltage. Eventhough the reading is steady at WOT, you cannot use the reading to tune your car unless your O2 is a wideband type.
 
02

zaki said:
FWIK, for a 1V O2 sensor, the ECU will look for 0.45 V with some tolerance to the target voltage. Eventhough the reading is steady at WOT, you cannot use the reading to tune your car unless your O2 is a wideband type.

I do aggree with you bro.. but for now.. i'm stuck with stock o2 and a g-sensor to play with.. wb is way to expensive here in our country... and i'm sure not gonna waste money on dyno's.. and if i do.. i hope it'll be close enough to the target data.. so few rounds would be good enough..
 

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