I'm saving up for a full exhaust kit like a Greddy Evo 2
I have watched many videos on youtube, but most of
them have other things such as J pip, intake, pre cat deleted.

My money is limited so I can't spend like +$1000 on exhaust.
Can I get recommendation on an exhaust kit ~$600 which has
a deep loud (the louder the better), please?

I heard invidia n1 exhaust on 6thgenaccord, it sounds like a fart can.

 

Exhaust questions for 6thgenaccord

 

Another option is to buy the muffler(s) you want, along with a resonator (Magnaflow or Vibrant), then take it to an exhaust shop and have them bend piping and weld everything up. It might not look as good and shiny as if you purchased a full system, but it will do the same job.