Originally Posted by CamaroSS408
cut outs too?
NPP exhaust has a vacuum control cut out built into the muffler ( duel mode exhaust). ZL1's and 1LE cars have this.
2013 2SS/RS L99/A6 Crystal Red Metallic Tincoat email@example.com Bone Stock
firstname.lastname@example.org with New Era CAI & U/D Pulley
12.12 @ 114.16 after Stainless Power headers and no tune yet on stock P-Zero's!
12.007@ 115.20 With 18" Drag Radials - 11.93 @115.19 Added a PTB
11.76 @116.59 With Yank SS3200 Converter - 11.63 @116.52 After PI and Tuning
11.44 @118.75 Bolt-on's - 10.72 @127.93 (504rwhp,457rwtq) Heads, VVT Cam and Yank SS3600