IMO- i wouldnt want it interior vibrating loud. I would just like it to go vroom when i hit it at high rpms, kinda like a intake and thats how the mufflers should be, not just turning on the car and making a vroom on ****ing idle, i think its kinda ricey just blowing pipe while in park or even just going from stop light to stop light.
Apex'i is great id keep em.