has anyone ever seen these setups before, they are freakin awesome looking. But i want to know if they perform well..The site said they have a HP Gain of 3hp....Esr claims 8 HP....and Yoshimura claims 8-12 HP....but anywayz here is a link to the pic of the Looney Tuned on a Z400
http://www.worldwideperformance1.com...de=LTE-EXHAUST