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For those of you that have done this, how is the drone inside? Also, how loud is it compared to stock sides plus bypass?
Drones. Pretty badly.
I have GMG headers, Eddie's "elbow" bypass, OEM Ti center. Below 3krpm the drone is borderline intolerable. Forces me to drive with windows slightly open.
When I had stock headers, side mufflers and center bypass there's no drone whatsoever.
The problem is not with the Eddie's elbow bypasses but the center muffler. A hollow chamber of that size is bound to suffer from resonance. It so happens the resonance frequency in the particular case of our cars happens between 2-3k rpm.
Then again, these cars are supposed to be enjoyed WAAY high up in the rev band... so maybe I just need to and drive her better.
What he said, it drones in low RPMs, up to 2800-2900 RPM, after that no drone.
Also depends on how ''perfect'' is the center muffler, the older it is, the worse the drone.