K so i have a 2010 g37s coupe. Currently only mod is deleted mufflers
Im adding stillen gen3 cai and a 93 octane tune, before i tune should i do berk or invidia test pipes or hfc ? Keep in mind i want the loudest option possible and dont plan on doing both pipes and hfc. Its one or the other... ny performance shop keeps pushing motordynes resonated test pipes but warned me there more on the quiet side. I want the exact oposite... any opinions guys??? Thanks

 

Are you at all concerned with the quality of the sound? Rasp? Drone? If not, the answer is easy, just get the cheapest test pipes you can. That would be the 'loudest' option. MD RTP are definitely a lot quieter than regular test pipes.

 

U want noise, get straight test pipes.

 

I don't mean to be rude, but I lol'd at both HFCs and test pipes.

Anywho, test pipes are louder but will have more rasp. But long tube headers would be even louder.