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Discussion Starter · #1 ·
I seem to always have strange things going on with my car :) ... This is more for information that anything but here it goes.

1 year ago I put on my M2 Turboback exhaust/uppipe and I never had that P0420. I went through the stock turbo -> FP Turbo -> VF30. I also upgraded my TMIC to the M2 and still no problems. I sold the TMIC and low and behold I all of a sudden got the P0420 code. I was thinking this was very strange since I have never seen that CEL before on my car. I reset it and went through that cycle 3 times. I finally resorted to looking for the CEL fix, But before I ordered it I got the TXS TMIC.. Bam the CEL no longer comes back. It has been 500 miles since and no code.

Anyone have an theories on this? Seems very strange to me but maybe there is an easy explanation. I havent seen anyone have this exact scenario before. Maybe instead of ppl buying the $20 CEL fix they should just go out and buy a $900 TMIC? :D
 
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