Thread: Jdl turbo downpipe to OEM Over pipe
View Single Post
Old 06-30-2018, 09:24 PM   #3
gtengr
Senior Member
 
Join Date: Nov 2016
Drives: 2017 BRZ
Location: USA
Posts: 655
Thanks: 326
Thanked 258 Times in 177 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Wrap a piece of string or similar around the overpipe, then take that measurement and divide by 3.14.
gtengr is offline   Reply With Quote