Originally Posted by j2m
What X-Pipe are you running?
The cold start on the sport is pretty loud but if I close the valve it quiets the low bass rumble. Have you considered having Gintani add the Valve? Wonder if they would retro fit for you.
Somebody needs to jump on this!
Im rocking the stock X pipe still. I wish I could add the valve, but I have the monster sized single wall 4" tips. Ive only seen the valve on the dual wall. But I will call and ask them anyhow. So thanks for the tip!