I've got an RB Downpipe, RB Silencer, and an HKS Hi Power....
Honestly, this setup is quite loud, but i think I've got a few exhaust leaks.
It was a LOT quiter when I ran a stock downpipe(with cat) and a main cat delete.
Somehow, I think the HKS exhaust was designed to be used with a stock cat... without one, it doesn't sound as nice, and drones to all hell.
As far as Racing Beat, you really cant go wrong with it.
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Rotaries:They are NOT that complicated!
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