FS9N-18881-C. This is not a reflash, it is the genuine original. I had one in my car, and it is hands down one of the best mods I ever did. It smooths out the power band, the engine pulls harder and it makes an even bigger difference as you add more mods. The P5 should have come with one of these from the factory! It will run on any 01-03 Protege/Protege5 with the 2.0L motor and a manual transmission (except the Mazdaspeed Protege), and 91 octane or higher is necessary to get the full performance. I'm happy to give installation instructions (it's easy to install) or answer any questions, but please ask prior to purchase.
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