downpipe question....
#1
I just wanted to ask if a "twin dump" downpipe with a silencer or free flow catalyser is quieter than a straight through where the waste gate is blanked off. I currently have a JSpeed one (Japanese make) I think it's similar to a HKS one. My centre section and rear box is a Blitz Nur Spec R and I was wondering if (or what) I can do to make it a little quieter?
If I wrap the downpipe with heat-insulating bandage will it also reduce noise?
Thanks
If I wrap the downpipe with heat-insulating bandage will it also reduce noise?
Thanks
#2
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
I think that the noise is due to the Nur Spec FAR MORE than the downpipe. A Nur Spec on my twin dump Magnex downpipe with STi/PPP resonated centre made is the loudest Scooby I have ever heard. Going back to a PPP backbox makes it the quietest decatted Scooby I have ever heard.
Thread
Thread Starter
Forum
Replies
Last Post