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Discussion Starter · #1 ·
I have a 2010 mazda 3 GT that i need to make more powerful. I live up in the mountains and the stock parts are just not cutting it for me in terms of having the power to climb big mountain passes. I have had a altitude tune on the car to help in the meantime whilst i find out what i can do to my car to help with this problem.

My question is what can i upgrade and in what order. Not looking to do a engine swap. Anything besides that is fair game.

I just need some help from people that know the cars, to see what i could change and swap out in my car to get some more power.

Thank you
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