Cat removal with stock exhaust?

NYBladeZ

OP don't overlook the fact that the stock cats rob some serious HP. I made ~293WHP on a dynojet after installing test pipes.

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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

bmarcinczyk14

The resonated test pipe from FI is also a option, since it's relatively cheaper than their HFC's, but I wonder how much louder it will be then with the HFC's? I'll be getting the 18 inch resonators from them if I decide to go with either setup in order to keep the sound level livable. Will the tone be different between the two?

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'10 370z -- '09 Ducati 848 -- '05 Kawasaki 636 Track Bike -- '02 Sentra SE-R Spec V