Not too many upgrades performance wise, Just K&N KAI, and SRS catback exhaust. I stopped doing performance because I have 2 15's in a huge box with an extra 100 pounds in just secondary batteries, so I have a constant almost 300 pounds in the back. So mostly It's just a show car. Still got a long ways to go but I'm getting there
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- 2005 Mazda 3 S (5 door)
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Your first post, well done!