TURBO4LT Member 1,533 Member For: 21y 5m 25d Gender: Male Location: NSW Posted 01/06/09 06:53 AM Share Posted 01/06/09 06:53 AM I've also got the Xforce 4inch dump into 3.5, its fine at power levels under 350rwkws and I really like the sound, but above those levels you can hear it running out of flow especially on the dyno. Link to comment Share on other sites More sharing options...
Corzza 777 Member 7,135 Member For: 16y 11d Gender: Male Location: Neutral Bay. Born and Bred in the RSA Posted 01/06/09 10:06 PM Share Posted 01/06/09 10:06 PM This is they system I would be going for trumpy955. Iv been doing my research and im getting a custom exhaust made up 4" into 3.5" with proven results Link to comment Share on other sites More sharing options...
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