I alredy got a new exhaust wich is a banana pipe. That's why I want a higher air flow exhaust. But this time I'll re-jet it. BUT! Could I just put a bigger air filter on it? I currently have the one that is a black circle and has 4 pipes comming out. If I put on one that is bigger, like on the link I sent, that would be enough right?
I tried the Keihin clone and its a pain to tune vs the simple and cheap NT carb. If you want a bit more flow and better looks you can throw a small cone filter on it with the long offset intake. Will give a little bit more power and mid range too.
You should ALWAYS be tuning your bikes since not only is every person's location different but every motor will like slightly different things as well.