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Hello.... i recently went to a local race shop and had some megan racing headers installed on my car IS300....when they were done they told me that there was an O2 sensor that could not be removed and needed to be replaced which cost me about $150. They told me until then my check engine light would come on. Now that they have replaced that sensor my check engine light is still on...and another IS owner who happened to be at the shop at that time said that i need to get whats called and ECU faker or O2 simulator... which they were unable to locate. The guy told me to check this forum and see if anyone knows where I can buy one of these and what the cost would be....so please if anyone has any idea about this please post or email me at [email protected]
 

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I personally have no clue what the solution is (or the problem to be honest).
This forum has few members and is quite inactive. Try my.is this website will most likely have way more Is300 owners that will be able to help you out.

www.my.is
 
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