John at GTHaus didn't seem worried, only thing he advised me of was that it won't be as loud as the youtube video since I'm running stock plumbing. Hopefully they get on here as a vendor and chime in soon. Worst part, they already sold their first 30 sets I have to wait 4-6 weeks.
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2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 
2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling
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