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The ACE350 headers and HKS dual resonated frontpipe I have, give pretty much normal sound, except some "resonance" around 3000-3500rpms if I accelerate with higher gears 4th-5th-6th.
I guess if I keep the OEM midpipe and add only the Milltek backbox it will be even better.
I am planning to change exhaust hangers also with the uprated STI ones that reduce the minimal drone/resonance or whatever it is.
Last edited by JIM THEO; 03-23-2024 at 03:05 PM.
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