Thread: [For Sale] Nismo R-Tune Catback Exhaust
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Old 11-09-2021, 09:20 PM   #10 (permalink)
geeitup
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Originally Posted by NissanTracker View Post
I'm actually in the same boat. Supercharged with TG's A-A kit with Motordyne TDX2. I was blowing cats so went to FI resonated test pipes. Loud as hell.

What I did was added high flow cats further down stream to the Y pipe. 2 100 cells on each side. I also added Hemholtz resonators to the test pipes (similar to the Motordyne ART, but with additional resonators on the FI TPs).

Helmholtz resonators help a ton. Just bottle resonators with caps on them. Technically they need to be sized to cancel out rasp/drone. They do a great job adding a deeper tone.
So based on my current system, do you think it would help to add an additional hemboltz chamber somewhere else in the system? I'll have the Motordyne ART fabbed to restore the original chamber size.
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