Okay, so I finally installed HKS Hi Power today... To my surprise, the Hi Power + stock cats is very quiet just like the stock Nismo exhaust. But I still like the tone of it. I've heard test pipe + hi power combo at local meets. That is day and night different!
Now, I want to get the HFC for myself too. My question to OP... After you install the berk, do you feel power lose at low/mid end? That's what happened when I had FI hfc and FI cbe and this is my biggist concern to get the HFCs.
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