F.I. Non res. I've heard HKS next to the FI and it just doesn't sound as deep or mean. I can't speak to the resonated FI systems, but it sounds like non-res will be the way to go for what you're looking for.
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350z / 40th 370z / C6 Z06 / BMW M4 / V10 R8 / C7 Grand Spot / 997.1 GT3 / S2K / Camaro ZL1 / 718 GTS / 991.2 GT3
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