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My check engine light is on and I had it checked with the result being error secondary air injection low. Is this something I can do on my own and how expensive?
yes,there is Mazda tool can repair it and you can DIY, it is easy, I know a tool may be can help you.
you can go here http://www.bimmerfest.com/forums/showthread.php?t=286145
it teaches you.
Q&A > Mazda > 2005 Mazda RX-8