2.5 NA w/cat./straight pipe/muffler?
View Single Post
10-06-2012, 01:44 PM
2006 06 SGM Slowbaru
Back pressure is bad for power. Period. Removing the two cats will reduce back pressure somewhat, so basically long as you stay with stock sized pipe, you won't lose anything.
of the site do not see these ads.
View Public Profile
Find More Posts by Counterfit