Mods that affect power and sound: - Spintech 2.5" Catback with X-pipe - Dynatech Longtube Headers (with high-flow cats) - Tex...

This Is How Ur 2006-2007 Civic Si Will Sound With A Skunk 2 Mega Power R 70mm Catback Exhaust. Plus an CAI. Find Me On Myspac...

Big sound improvement over stock

STi HKS header/up pipe, Perrin catted DP, Greddy SP2 Catback

2008 C6Z bone stock vs 2008 M5 with catback.mp4

2006 Jetta 2.5 with Neuspeed 2.75" cat-back exhaus

SRT-10 Ram Borla Catback

2,5"-2" och 4" utblås provar med en dämpare efter kattarna

Comparison between the new STILLEN 370Z Cat-Back Exhaust System and the OEM 370Z exhaust. Dyno shows +18whp over stock.

Before and After SLP Loudmouth II Catback Exhaust