Thread: Exhaust valves
View Single Post
Old 10-22-2015, 06:09 AM   #11 (permalink)
markweatherill
Master EcoModder
 
Join Date: May 2008
Location: UK
Posts: 332
Thanks: 16
Thanked 79 Times in 54 Posts
Send a message via MSN to markweatherill
I seem to recall a JDM aftermarket device which had a vacuum controlled butterfly valve. Or it might have been electronically controlled. It was made by HKS or some such. I could imagine the severe environment of an exhaust pipe causing problems for such a device.

  Reply With Quote