I tried with my BlackBerry but you can't hear ****. I don't think it is too loud and you can modulate the noise with careful driving. Decellorating in gear is loud on the drone side. Punching it is much louder in the midrange, very aggressive and well.... Just plain kick ***!

 

should have just gotten a test pipe / downpipe the spring bolts that connect the factory o2 housing to the downpipe are slack as hell to remove

 

Nah. If I got that route the o2 housing and turbo are getting replaced.