wow, I'm surprised to see 5zigens email in my inbox today. Basically I emailed them 3 months ago asking what the dyno numbers were for this video
YouTube - Nissan 370Z Z34 on Dyno 12.10.08
[YOUTUBEHQ]NDQWK1Ny3q0[/YOUTUBEHQ]
and today they email me the result :
334ps/6800rpm w/5ZIGEN SP muffler
You're more than welcome to ask our sponsors or make a thread asking who's the authorized 5zigen distributor here among sponsors.