I am new to the car scene. I have an 05 mazda 3 5 door,and I would like to know what the best exhaust is. All my other vehicles run magna flow, Is that the case here? If possible what other mods are good to start with? Thanks for any help any one is willing to share.
CRASH!

hks

HKS hi-power. 2.75" in diameter. Sounds great and is good enough diameter if you go turbo!

Thanks for the info I was planning on 2.75"