Mazda5 Exhaust and intake system
 

I bought a 2015 GT automatic Mazda5 few month ago. I am looking to increase acceleration little bit.

I want the catback system, but seem to be little expensive to spend. Any one could recommend some muffler? I do NOT want the loud sound.

I am going to put in ebay intake pipe and AEM dryflow air filter later on, hope it can help accelerate little.

Thanks.