The Final Steps

From my industry contacts, I learned that Magna Flow offered tow separate Titanium catback systems; one without a resonator and the one with a resonator.  The non-resonated catback was appealing, but I learned from a subsequent inquiry with Magnaflow that these had been discontinued.  They also told me that the resonated titanium catback exhaust was not a true 3 inches through the resonator portion and could limit the future performance I expected to achieve with the modifications planned for the STI.  This was enough for me to cross Magnaflow off my list of potential titanium catback exhausts.

I looked into the Powerhouse Amuse full titanium catback exhaust system, but I quickly realized that it was only 70 mm in diameter, which is approximately 2.75 inches.

Next, I evaluated the Invidia G300 full titanium catback exhaust system.  This was a top notch system in terms quality, a full 3 inches in diameter, and the manufacturer specifically promoted its lightweight design.  Finally, the exhaust was resonated to make it suitable for street use.  However, I learned the exhaust had been discontinued and was no longer being offered when I contacted several distributors.