Thread
:
1LE build and Journal - SUKXOST [COTW 12/31/12]
View Single Post
11-28-2012, 08:08 AM
#
128
BlkSlvrdo129
Drives: 2008 Silverado
Join Date: Dec 2010
Location: Canada
Posts: 98
Are the NPP mufflers normally closed on the inside pipe? And the engine vacuum opens them? Or is it the opposite?
BlkSlvrdo129
View Public Profile
Find More Posts by BlkSlvrdo129