Had it hook up today
My 1st impression
HKS Silent Hi Power sound louder
Apexi N1 sound like a high rev stock muffler
I can felt that HKS drove better when i go light footed
And it doesnt degrade when i go full throttle
Over all i still prefer HKS over Apexi
Nevertheless rest the HKS for Apexi now
Without the resonator the Apexi should perform better high end since its 100% free flow
Apexi N1
HKS Silent Hi Power
