I had K&N filters installed and tuned with AAM Short Tail.
AAM Short Tail + stock filters + stock tune
to
AAM Short tail + K&N filters + UpRev = about +14-16 whp mid and +7-9 whp up top.
Also.. please do take into consideration that this may vary from car to car as some 370z run richer than others from factory.
Honestly.. hard to beat the price for what the filter does. I'd probably go with Stillen GenIIIs if I had the money.
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Fast Intentions / K&N / Blox / Evo-R / Uprev / Forgestar 19" F14 / R40 / NST / Z1 / SDCE / H&R / Kenwood / ISS Forged 20" FM10R
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