As long as you don't have a cat efficiency CEL and the readiness test is passed, you'll have no problems with the test pipe. It's just an OBD-II test.


Eric

 

awesome! wish I had seen this post earlier, thanks for this

 

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

 

does this just stop the cat efficiency test, or does it actually stop the ecu from reading the rear o2 sensor?

I'd like to be able to use the rear o2 pin for something else, not sure if this is a solution..

 

Anybody know about using this method?

 

guys does this specifically disable the O2 CEL or all CEL's?

 

Hi all,

I've got a EDM 88840016 ROM on a IX with no cat and no rear O2 sensor (WB instead). I'm trying this mod with resistor + flash; at specified address I found 0x56DA (as in first post), I've changed it to 0x56D8 and reflashed.

Just one point: I'm now getting some P0125 (random)... I'm trying to understand if it is related to CEL disable. Anyone experienced?

 

It's specific to the Rear O2 circuit, so it's just the O2 CEL. If you don't do something about the heater circuit (as I've done with the resistor), then you'll see that code thrown.

 

I didn't even know there was a version 16 ROM out. It's quite possible that the address for the O2 is different for this ROM. The only thing I can suggest is to flash it back to stock and see if you still get the P0125 code. If you do, it's not the patch that caused it.

 

You are right, I was thinking about doing so. Now I'm working on a good AFR setup, I will work on this later

 

hrmm I looked through the ECU code and there is a massive chunk of engine_calcs that gets processed when this bit is cleared...

 

what does this mean is it good or bad
i also want to try this as i want to put my wideband in place of the 02.

al\lupo did you come right there with your code as i have the same rom as you
EDM evo.

 

Not for now. I will try the next week, it is in my todo list

P.S.: wow, I'm not alone with this ROM version

 

well both are roms are Europe domestic market and not USDM

so maybe that why we are different
i want to try this but just want to make sure all is working before i pull out 02 sensor

Let me know your findings bro

 

Worked like a charm. Thanks!!!