time to throw on a stage 2 map!

 

In my case, AP can get rid of the code but will not PREVENT it comes up. I know it suppose has P0420 code eliminator program in their maps. My stage 2 map still give me the code. There are three options you can do:
1. Get a professional tuned, and ask tuner to get rid of the code forever.
2. Get a AP and have it in your car all the time to get rid of code each time it comes up.
3. Get a different brand of straight pipe. I dont wana start any arguments for brands but the fact is, I changed straight pipe from AMS (pipe + O2 eliminator) to ETS, and never have code since. ETS's built in funny shape O2 eliminator works perfect on my car.

Cheers,

Chris

 

You can shut off the P0420 code in ATR.

There were some old Stage 2 maps that Cobb forgot to shut off P0420.

All the newer ones are good.