HKS Hi-Power too loud with HFC

Dsevast

So I have posted before about my Berk HFC's and my HKS Hi-power exhaust, but it has been a while, and had a question for you guys.

I had the HKS on for a year before I purchased the Berk HFC's. Then I purchased the Berk HFC's last year and have had them on the car for about 5,000 miles. I got them because I love the way the HKS exhaust sounds, and I just wanted the exhaust to be a tad bit louder. Unfortunately when I bought the Berk's there were really no sound clips of that combo or of anyone who had the HKS Hi-power with HFC's so I bought the Berk HFC's based on customer's reviews. Now I feel that the exhaust may be a little loud for my liking.

So my question is this: Should I maybe get different HFC's? Would a different brand maybe be quieter?

I have been looking into maybe swapping out my whole exhaust for the Fast intentions set up but I don't want to be one of those people who gets made fun of for not researching their exhaust before purchasing, because I do love the way the HKS sounds but just wish it was a tad bit louder than with the stock cats, and a tad bit quieter than with the HFC's.... Haha that sounds like I am nit-picking when I actually type it out! Thanks for any input guys.

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2011 PW 6MT, Fast Intentions CBE, Fast Intentions RHFC's, Stillen Gen 3's, Uprev, Whiteline sways, 24 Row Oil cooler

m4a1mustang

Not sure if there are any available for the 370, but a resonated HFC would quiet things down a bit.

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speedfreek

You could try FI HFC. They're 300 cell count whereas Berk is 200. That should quiet it down some although dunno if it will be that noticeable to you. So your best bet is to get resonated HFC from FI.

Fast Intentions

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SPOHN

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LostSol

Any reason to keep the cats? ART test pipes will flow better and the resonator chamber should keep them slightly quieter

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m4a1mustang

Emissions considerations. TPs will fail a sniffer test and visual inspection.

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Streetlife

I know Amuse HFC's still give off hiss, i guess it's just the nature of the VQ when you add HFC's by any manufacturer, but i always wondered if Mine's Motorsports HFC's would do the same? I love my full Tanabe exhaust with stock cats, just wondered if anyone has tried Mine's?

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Tanabe Medalion Exhaust + Tanabe Y-Pipe, Baker Tuning, K&N Drop-Ins, Z1 Post MAF Tubes, GT-R Button, Nismo Magnetic Oil Drain Plug, CeramiKool Tint 35%, Solar Gard Clearshield Clearbra

roy'sz

Ark has resonated hfc's and I have them on my car. Check my sig for vid...we have similar exhausts and the noise isnt horrible or loud for me.

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https://www.youtube.com/watch?v=RtvG...data_playerARK HFC'S-ARK Grip-Stillen G3-M370-UPREV-Kinetix upper control arm-WC Latheworks-Stage2 Bad@$$ Driver(318whp/268tq)-

Dsevast

I would have to agree with this. I do not like the way that cars smell with TPs. I guess the FI resonated HFC's is the way to go for me.

Thanks Speedfreak for your recommendation. Their description of those HFC's sound like what I am going for. Keep the suggestions coming guys this is great info.

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2011 PW 6MT, Fast Intentions CBE, Fast Intentions RHFC's, Stillen Gen 3's, Uprev, Whiteline sways, 24 Row Oil cooler

Dsevast

Wow I love the way that sounds! Any other vid's you have of your car?

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2011 PW 6MT, Fast Intentions CBE, Fast Intentions RHFC's, Stillen Gen 3's, Uprev, Whiteline sways, 24 Row Oil cooler

wheee!

I have the same combo as the OP and agree that the exhaust can be loud under WOT, but it is dead quiet at idle and cruise. Full of win if you ask me....

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roy'sz

the video of my car is with the intake manifold also. If you click on my username on the YouTube website I have a drive by video with the cold air intakes, hi flow catalytic converters, and the cat back exhaust.soon I plan on taking drive by videos and in car videos just have not had the time.

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https://www.youtube.com/watch?v=RtvG...data_playerARK HFC'S-ARK Grip-Stillen G3-M370-UPREV-Kinetix upper control arm-WC Latheworks-Stage2 Bad@$$ Driver(318whp/268tq)-

forza370z

OP...

1. Fast Intentions is not quieter than HKS and has more drone.

2. Watching video clips to judge the sound of exhaust system is just wrong. You HAVE TO go to some local meets and hear it for yourself.

3. In your case, I'd recommend Fast Intentions resonated HFC.

Good luck.

roy'sz

Hey forza, the reason I had suggested him checking out the sound differnce between mine and his was because our sounds are similar due to the resonators on the exhaust. My hfc's are RESONATED....and that should help guide him in the direction of quieting the exhaust down. Maybe no one near him has resonated cats or resonated tp?

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https://www.youtube.com/watch?v=RtvG...data_playerARK HFC'S-ARK Grip-Stillen G3-M370-UPREV-Kinetix upper control arm-WC Latheworks-Stage2 Bad@$$ Driver(318whp/268tq)-

Dsevast

Yeah unfortunately for me there have not been many meets that I have seen here in cleveland. I was just asking if anyone had a similar set up as me was experiencing the same thing as me. Thanks for the back up roy'sz

Also where did you get your ARK resonated HFC's from? I could not find them in the marketplace here on the forum or on their own website.

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2011 PW 6MT, Fast Intentions CBE, Fast Intentions RHFC's, Stillen Gen 3's, Uprev, Whiteline sways, 24 Row Oil cooler