Want to remove/disable your rear O2 sensor without a CEL? Here's how..
Jun 20, 2007, 09:21 AM
#31
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I just passed my emissions last week all i did was use a obd 2 scan tool and erased the cel and passed no problem
MODS
AMS STREET INTERCOOLER
AMS LICP
AMS DYNO AND TUNE
BLITZ MBC
BLITZ OPEN FILTER TOP
APS FULL 3"EXHAUST W/TEST PIPE
WALBRO FUEL PUMP
SAMCO COLD AIR PIPE
319AWHP
290AWTQ
MODS
AMS STREET INTERCOOLER
AMS LICP
AMS DYNO AND TUNE
BLITZ MBC
BLITZ OPEN FILTER TOP
APS FULL 3"EXHAUST W/TEST PIPE
WALBRO FUEL PUMP
SAMCO COLD AIR PIPE
319AWHP
290AWTQ
One year they will plug in and check.
The next year they'll just visually check for the CEL.
If you just cleared the code the car will not pass a plug-in test. The catalytic converter system will show that it is not ready to be read. It will not show that it is acceptable.
The system needs to be run for a considerable amount of time before the system passes its check.
So if say you unplug the negative terminal on your battery to reset all codes and drive to get your inspection sticker...you won't pass because the catalytic converter system will not show that it is ready to test.
Jun 20, 2007, 10:00 AM
#34
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It's in the works. when you have your car in for an emmisions check, the ODB systems look for 2 parameters. there is a set condition that turns on the check engine light, and a second parameter which is the readiness code.
this patch currently disables the CEL, but also prevents the readiness code from being set. Without this, you will not pass emmissions.
this patch currently disables the CEL, but also prevents the readiness code from being set. Without this, you will not pass emmissions.
SNA
Jun 20, 2007, 10:03 AM
#35
This depends... In California we are able to pass cars with 2 monitors that are not "ready"... not sure how many monitors are in the evo but i can find out if there is a need to. So let's say there is 5 monitors we just need 3 to be ready and the car will pass as long as the cel is in the "off" positions... hell some cars never get ready but BAR knows this and exclude these cars.
SNA
SNA
In Illinois, newer cars (I think 2003 and up) can only have 1 readiness test not ready and that one test cannot be the cat efficiency test.
Eric
Jun 20, 2007, 10:03 AM
#36
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This depends... In California we are able to pass cars with 2 monitors that are not "ready"... not sure how many monitors are in the evo but i can find out if there is a need to. So let's say there is 5 monitors we just need 3 to be ready and the car will pass as long as the cel is in the "off" positions... hell some cars never get ready but BAR knows this and exclude these cars.
SNA
SNA
There are 2 sensors.
Jun 21, 2007, 09:30 AM
#41
Disable the Rear O2 routine in the ROM
Update the ECUFlash XML file located at: C:\ProgramFiles\OpenECU\EcuFlash\rommetadata\mitsu bishi\evo\ (insert your current rom here).xml
Using Notepad or other XML editor to include the following entry so the code ends like this:
<table name="ECU Periphery0" category="Misc" address="faa" type="1D" level="1" scaling="Hex16"/>
</rom>
In other words it will be the last entry in the file and will have that close tag near it ( </rom> )
Open ECUFlash v1.3 and your ROM image. Scroll down to the Misc section and locate the "ECU Periphery0" entry. If the value for this entry is "0x56DA," press "=" on your keyboard and type "0x56D8" (without quotes) and press Enter. If the value for this entry is "0x56DB," press "=" on your keyboard and type "0x56D9" (without quotes) and press Enter.
Save the ROM image and flash your ECU with the new file. IF the value is anything other than whats listed do not modify it. I have a feeling this will work on the EDM as well, but I dont have an EDM ROM to look at to check.
JB
Update the ECUFlash XML file located at: C:\ProgramFiles\OpenECU\EcuFlash\rommetadata\mitsu bishi\evo\ (insert your current rom here).xml
Using Notepad or other XML editor to include the following entry so the code ends like this:
<table name="ECU Periphery0" category="Misc" address="faa" type="1D" level="1" scaling="Hex16"/>
</rom>
In other words it will be the last entry in the file and will have that close tag near it ( </rom> )
Open ECUFlash v1.3 and your ROM image. Scroll down to the Misc section and locate the "ECU Periphery0" entry. If the value for this entry is "0x56DA," press "=" on your keyboard and type "0x56D8" (without quotes) and press Enter. If the value for this entry is "0x56DB," press "=" on your keyboard and type "0x56D9" (without quotes) and press Enter.
Save the ROM image and flash your ECU with the new file. IF the value is anything other than whats listed do not modify it. I have a feeling this will work on the EDM as well, but I dont have an EDM ROM to look at to check.
JB
