I just installed the Go tuning SE dual and have been looking at adding either a HFC or test pipe. I am very happy with the way it sounds now but have heard it will get rid of some of the drone with one or the other. I am hoping it won't get to much louder as I prefer a quieter exhaust. So do any of you out there have one of these combinations? Let me know what you guys think. Thanks. I also have an AEM V2 intake as well just so you know.

 

This question gets asked just about every week...

 

I would think it somewhat differs with different brands of exhausts, and I guess that should make it easy to point me in a direction of the answer I seek.

 

not really, it's the same for all exhausts

test pipe will be a bit louder overall with less drone vs. stock cat/hfc

 

I figured it would be louder but I was trying to find out how much louder. Also is there still drone with a HFC? I just don't want to have an exhaust that's going to be loud enough to hear from far away or draw to much attention.