control o2 sensor after cat disabling

cunakis · **Joined:** Wed Dec 09, 2015 4:32 am **Posts:** 4

Can i get some help in disabling control o2 sensors in 330ci e46 2000 year
ecu is ms43, here is ori file from car !!
There is a tex file with software and hardware versions

Cloudforce · **Joined:** Wed Aug 27, 2014 7:57 am **Posts:** 259

Try this

cunakis · **Joined:** Wed Dec 09, 2015 4:32 am **Posts:** 4

Thank you for help !!
Solved problem with secondary o2 sensors reprogramming dme with progman !
Did not tested your file, but thank you again for prompt help.
Here is file (i think is e2) full read 512kb, partial read 64kb, tuned 64kb file, and XDF i found on internet and used for tuning ecu !

M52Drifter · **Joined:** Sun Sep 06, 2015 2:16 pm **Posts:** 144

Hi, I would also like to disable o2 sensors after cat delete and putting headers on 330i, do I need to only off the following dtc : O2 sensor heater pre cat, O2 sensor heater post cat; o2 sensors voltage upstream and downstream ?
I checked in the bin that Cloudforce made and using A2L I see 4 bytes changed, only one identified is "C_ABC_MAX_KNK", can someone tell me what is it ? And what are others ?
Thank you, I post you my bin.

Cloudforce · **Joined:** Wed Aug 27, 2014 7:57 am **Posts:** 259

M52Drifter wrote:

Hi, I would also like to disable o2 sensors after cat delete and putting headers on 330i, do I need to only off the following dtc : O2 sensor heater pre cat, O2 sensor heater post cat; o2 sensors voltage upstream and downstream ?
I checked in the bin that Cloudforce made and using A2L I see 4 bytes changed, only one identified is "C_ABC_MAX_KNK", can someone tell me what is it ? And what are others ?
Thank you, I post you my bin.

I don´t think i changed the max anti-bounce counter for the knock sensor

Nevertheless, go to the ms43 wiki and take a look at the different sections. We explained the settings of c_conf_cat which tell the ecu how many and where the lambda probes are positioned.

scorpionreptyle · **Joined:** Wed Apr 12, 2017 12:14 pm **Posts:** 7

M52Drifter wrote:

Hi, I would also like to disable o2 sensors after cat delete and putting headers on 330i, do I need to only off the following dtc : O2 sensor heater pre cat, O2 sensor heater post cat; o2 sensors voltage upstream and downstream ?
I checked in the bin that Cloudforce made and using A2L I see 4 bytes changed, only one identified is "C_ABC_MAX_KNK", can someone tell me what is it ? And what are others ?
Thank you, I post you my bin.

did u work out with 8000+ rpms ??

Lambda1 · **Joined:** Sat Jan 14, 2017 5:46 pm **Posts:** 534

If you do this your standard springs, valves and so on will be say: Hello my dump friend!
At standard engine not more than 7000 rpm! But 7000 rpm isnt a really good value because of vibrations.

RomRaider

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