[Ownnij]

all i have to say is do not always keep this thing running in your car. uninstall as soon as you don't need it anymore.

[Almighty.F30]

Originally Posted by izaazk

anyone on here use the CATSIM emulator by Area47???

Any reviews??? I want to try it out before i go back to a catted DP

Is this only for the N55 or can i be used on other motors like the N26??

[Chef Blake]

I’ve only used it on an N55 2012 6MT

[Spiro G]

I tried it on my 2015 335i xdrive and unfortunately didn’t work. I think newer models are smarter and harder to trick

[msquaredF33]

Given that there are currently zero (am I wrong?) solutions for the EWG N55, I am working on a cat simulator as my latest weekend hobby project. The basic idea is to emulate the existing O2 sensor output when equipped with a factory cat by training a neural network.

I have been data logging (my original Cat equipped F33) over OBD2 for a couple thousand miles and collected many GB of data: multiple PIDs such as both O2 sensors, engine RPM, accelerator position, throttle position, air flow rate, intake manifold pressure, boost pressure, intake air temp, catalyst temp, etc. Next I move this logged data into a PC where I can do data analysis, build and train a model. The network inputs are all the various PIDs mentioned above, minus the O2 Sensor 2 (downstream) which is the target variable that my network will compute. If I am successful at this approach, then it may be possible to deploy the fully trained model onto a RaspberryPi under the hood. I will need to feed the Pi with all the same PID input signals (or at least the ones my model believes are most relevant) and I could do that a couple ways (ELM based OBD2 transmitter is one way, hard wiring is another).
See where this is going?

Anyway I wanted to share with the group what I am working on, and solicit any thoughts/ideas about my approach.

[shrimp]

Sounds really cool, keep us posted!

[13blk335ix]

get a tune. tune will delete cel. dont mess with catsim. old tech.

[Ownnij]

Originally Posted by 13blk335ix

get a tune. tune will delete cel. dont mess with catsim. old tech.

catsim will bypass the code for inspection though. Last time i checked tunes only hide the codes but it will still appear as fail during inspection.

[13blk335ix]

what is the name of the catsim product that passes obd2 reader nys inspection?

[It's Oz]

Originally Posted by msquaredF33

Given that there are currently zero (am I wrong?) solutions for the EWG N55, I am working on a cat simulator as my latest weekend hobby project. The basic idea is to emulate the existing O2 sensor output when equipped with a factory cat by training a neural network.

I have been data logging (my original Cat equipped F33) over OBD2 for a couple thousand miles and collected many GB of data: multiple PIDs such as both O2 sensors, engine RPM, accelerator position, throttle position, air flow rate, intake manifold pressure, boost pressure, intake air temp, catalyst temp, etc. Next I move this logged data into a PC where I can do data analysis, build and train a model. The network inputs are all the various PIDs mentioned above, minus the O2 Sensor 2 (downstream) which is the target variable that my network will compute. If I am successful at this approach, then it may be possible to deploy the fully trained model onto a RaspberryPi under the hood. I will need to feed the Pi with all the same PID input signals (or at least the ones my model believes are most relevant) and I could do that a couple ways (ELM based OBD2 transmitter is one way, hard wiring is another).
See where this is going?

Anyway I wanted to share with the group what I am working on, and solicit any thoughts/ideas about my approach.

Any updates with this?

[It's Oz]

Originally Posted by Ownnij

all i have to say is do not always keep this thing running in your car. uninstall as soon as you don't need it anymore.

Why? Does it affect the car in any way being installed long term?

[thejeremyman9]

Originally Posted by ClevelandBeemer

Do more research.

The O2 sensor is mounted in the exhaust manifold to monitor how much unburned oxygen is in the exhaust as the exhaust exits the engine. Monitoring oxygen levels in the exhaust is a way of gauging the fuel mixture. It tells the computer if the fuel mixture is burning rich (less oxygen) or lean (more oxygen).

The catsim gives different information to the ECU making it think you have a cat to avoid a CEL allowing you to pass an emissions test at the cost of not allowing the engine to properly manage AFR levels. This can cause significant damage long term.

Are you saying that the catsim affects the primary O2 sensor readings? Because the secondary O2 that is used to monitor the cat does nothing for fuel trims and AFR.

[n55david]

Originally Posted by thejeremyman9

Are you saying that the catsim affects the primary O2 sensor readings? Because the secondary O2 that is used to monitor the cat does nothing for fuel trims and AFR.

what you said...

[ClevelandBeemer]

Originally Posted by thejeremyman9

Are you saying that the catsim affects the primary O2 sensor readings? Because the secondary O2 that is used to monitor the cat does nothing for fuel trims and AFR.

Originally Posted by Phantom10R

what you said...

Deleted the post. You two are totally right. I lot my mind there for a min.

[hardparker]

I built a plug and play catsim with the ****** product. Passed emissions on my FBO cat-less X3 with the BM3 OTS E30 map with catalytic monitors enabled in the config.

[aps]

Originally Posted by hardparker

I built a plug and play catsim with the ****** product. Passed emissions on my FBO cat-less X3 with the BM3 OTS E30 map with catalytic monitors enabled in the config.

Can you provide more details? also looks like the forum hid the product name. is this A R E.A 74? or something else?

[hardparker]

Originally Posted by aps

Can you provide more details? also looks like the forum hid the product name. is this A R E.A 74? or something else?

Correct.

[It's Oz]

Thought I'd bump this thread up, perhaps I might save someone.

I recently bought the ****** CatSim for my 2014 EWG 335i. I installed the CatSim, cleared codes, and did some driving to see if my CEL was cleared for good. Before installing the CatSim all I had was the typical "P0420 catalyst system efficiency below threshold" code you get with a catless downpipe. Once I had completed a drive cycle my CEL came back on and with symptoms... I noticed my car was driving crappy. Rough shifting, rough idle, and sometimes an occasional misfire at high RPM. Seemed very peculiar so I checked the codes and bam, a whole SLEW of codes: P2097, P013A, P2196, and P2195. And all of those codes except P013A came from the front pre-cat O2 sensor, the sensor that the CatSim doesn't even affect! At least so I thought... Very strange. I contacted ****** sent them codes and they were just as dumbfounded. They had me double check that the wiring was done properly and that it was correctly grounded. I doubled checked and everything was fine. Tried another drive cycle and at this point my cars running even worse, still no fix, and same codes being thrown. ****** doesn't have clear answers at this point. I then got deep into th all knowing forums, found this thread, and found from other forum members that the ****** CatSim doesn't work on EWG cars; 2014 and newer. What?!? This was never communicated to me by ****** and it was evident at this point that it wasn't working for my car.

Long story short I removed the CatSim and my car immediately went back to normal. I'm no electrical engineer so I couldn't tell you what that CatSim was telling my ECU but it wasn't good. I'm assuming the byproduct of installing the CatSim was incorrect air to fuel ratio resulting in my car running crappy. I could be wrong but thats my suspicion.

Coming full circle, if you have an EWG, DO NOT install the ****** CatSim. All in all, ****** has been good to me and they have been willing to work with me. I see a lot of feedback from non-EWG car owners that swear by their CatSim so in no way am I discrediting their product. Just save yourself the headache and don't try and install it on your EWG car.

EDIT: ****** = A.R.E.A.7.4

[Jadar]

Originally Posted by It's Oz

Thought I'd bump this thread up, perhaps I might save someone.

I recently bought the ****** CatSim for my 2014 EWG 335i. I installed the CatSim, cleared codes, and did some driving to see if my CEL was cleared for good. Before installing the CatSim all I had was the typical "P0420 catalyst system efficiency below threshold" code you get with a catless downpipe. Once I had completed a drive cycle my CEL came back on and with symptoms... I noticed my car was driving crappy. Rough shifting, rough idle, and sometimes an occasional misfire at high RPM. Seemed very peculiar so I checked the codes and bam, a whole SLEW of codes: P2097, P013A, P2196, and P2195. And all of those codes except P013A came from the front pre-cat O2 sensor, the sensor that the CatSim doesn't even affect! At least so I thought... Very strange. I contacted ****** sent them codes and they were just as dumbfounded. They had me double check that the wiring was done properly and that it was correctly grounded. I doubled checked and everything was fine. Tried another drive cycle and at this point my cars running even worse, still no fix, and same codes being thrown. ****** doesn't have clear answers at this point. I then got deep into th all knowing forums, found this thread, and found from other forum members that the ****** CatSim doesn't work on EWG cars; 2014 and newer. What?!? This was never communicated to me by ****** and it was evident at this point that it wasn't working for my car.

Long story short I removed the CatSim and my car immediately went back to normal. I'm no electrical engineer so I couldn't tell you what that CatSim was telling my ECU but it wasn't good. I'm assuming the byproduct of installing the CatSim was incorrect air to fuel ratio resulting in my car running crappy. I could be wrong but thats my suspicion.

Coming full circle, if you have an EWG, DO NOT install the ****** CatSim. All in all, ****** has been good to me and they have been willing to work with me. I see a lot of feedback from non-EWG car owners that swear by their CatSim so in no way am I discrediting their product. Just save yourself the headache and don't try and install it on your EWG car.

EDIT: ****** = A.R.E.A.7.4

I’ve made numerous threads about This and informing everyone it won’t work on 14+ ewg cars nor s55 powered cars.

I’ve made plug and play harnesses and went
Into great detail probably waaay more then I should have. I walked away from making these harnesses shit hit the fan with the EPA and they do watch it’s all I’ll say. I was given a stern warning about this and assisting with these harnesses and making cars pass. For emissions just re install the oem dp and then pass
And go back. It’s the only way. It’s a dream doing a down pipe on F30’s compared to what I’m in now. S3/rs3 down pipes are a nightmare in comparison.

[brooks1005]

Originally Posted by Jadar

The cat sim won't work on 2014 and up EWG cars nor will it work on the s55 cars. There have been numerous issues when I built the plug and play devices and all the 2014 cars could not set all the monitors into readiness. ALL 100% pwg cars work with the sim no issues.

I've asked area 7 4 numerous times what the issue is with the newer cars and they only answered once by saying it "should" work.


It's nice having a plug n play solution too bad I can't source the terminals anymore.

I have the ar74 and the male and female connectors like you have in the picture to do this. Do you have the wiring combination diagram or better yet, a picture of how you wired it together?