When I do my Prochamber and O2 Sensor extensions on my '04, I am sure I will get a SES light or maybe I wont. My question is, will the car go into limp mode without the Mil Sims or will it run fine and just have the light on? 
Question about SES Light
- Thread starter mcmmotorsports
- Start date
HuskerCobra96
Founding Member
When you remove the cats, you'll get a P0420 and P0430 low cat efficiency codes that will be triggered by your rear o2 sensors. Rear o2 sensors play no role in engine control, so your car will run exactly the same with those codes.
Enter MIL Eliminators. The sole function of MIL Eliminators is to keep your check engine lamp off for the codes P0420 and P0430, but won't alter performance. Think of MIL Eliminators as cheap insurance, as if you don't run them, your check engine or SES lamp will always be on, and if something else goes wrong with the vehicle, and triggers another code, you won't know about it, because your check engine lamp will always be on. Plus, having the check engine lamp on all the time is rather annoying.
To summarize your question, look to the above post. Your car will run the same. If you have any additional questions regarding OBDII diagnostics, feel free to post 'em and I'll make sure you get an answer.
Enter MIL Eliminators. The sole function of MIL Eliminators is to keep your check engine lamp off for the codes P0420 and P0430, but won't alter performance. Think of MIL Eliminators as cheap insurance, as if you don't run them, your check engine or SES lamp will always be on, and if something else goes wrong with the vehicle, and triggers another code, you won't know about it, because your check engine lamp will always be on. Plus, having the check engine lamp on all the time is rather annoying.
To summarize your question, look to the above post. Your car will run the same. If you have any additional questions regarding OBDII diagnostics, feel free to post 'em and I'll make sure you get an answer.
GTvert01
New Member
2 words.....Bulb Removal 
Actually, I will spend the money to get the mils but I was just curious cause I won't have them right away.
Actually, I will spend the money to get the mils but I was just curious cause I won't have them right away.
GTvert01
New Member
mcmmotorsports said:2 words.....Bulb Removal
yeah, that will work, but what if you throw a different code?How would you know?Safer to just get the mils.
Can't the predator turn off those codes too? 
DELOS02GT
Founding Member
I turned the rear O2's off and still got an SES light. The code for mine is for the front drivers side O2. I read the stock O2's don't like it when you put on exhaust and they spit out an alarm. I need to replace it with a Bosch O2 and it should take care of the problem. If you get the MIL's and still get the SES light you might have to do this too....
HuskerCobra96
Founding Member
The bottom line is always pull the codes when you get a MIL or SES light. Pinpoint the problem and troubleshoot accordingly.
Here's a quick and dirty FAQ on MIL Eliminator troubleshooting:
http://www.ponyexpressperformance.com/MILtech.html
Keep the rubber side down, fellas.
Here's a quick and dirty FAQ on MIL Eliminator troubleshooting:
http://www.ponyexpressperformance.com/MILtech.html
Keep the rubber side down, fellas.
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