I just heard about this and was wondering if I need to do this b/c I just installed some headers not too long ago. here is a right up on the mod.... http://www.ls1camaro.net/sections.php?op=viewarticle&artid=11 Posted by DaddySS (Member # 848) on :
Some headers need them more than others - simple way to tell....are your check valves noisy?
Posted by Xsta Z 28 (Member # 740) on :
I did right up front, didn't want to chance having to take it apart again.
