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· Premium Member
2,806 Posts
Problem is that TCU and ECU is one module, so it will be impossible for you to do that. Another thing it will bolt on to your engine, but they are completely different, where 03-04 use speed sensor for speedo, and 05+ tundra don't even have that sensor in trans, it uses ABS sensors for speedo, and there are many other little things that may come into issues...
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