Topspeed Axleback vs Kinetix HFC

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05-09-2018, 12:28 AM

MOMO505

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Topspeed Axleback vs Kinetix HFC

Hi
I have g37x 2009 sedan bone stock. I finally saved some money to spoil my babe (college student

)
I need your advice whether should I get Topspeed Axle back or Kinetix HFC.
I'm looking for both sound and gain. dose the hfc will give me the same sound as axle back?

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05-09-2018, 07:37 AM

RMB5190

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Sound will be negligible more than likely wth just a HFC; maybe a bit louder? OEM cats are, if not the most, restrictive point of the exhaust system. Post resonators are right there with it. If you want the best of both worlds, I'd go with the HFC & a muffler delete until you can save up for the TS Y-back. Their axle back is basically an overpriced muffler delete..

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05-09-2018, 05:53 PM

StevenR91

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I would definitely go with the HFC. I have the Kinetix cats on my coupe and they made a noticeable difference in sound and I noticed mild power gains as well. I have a video on YouTube if you search "G37S Kinetix HFC stock exhaust"
hope this helps!

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05-16-2018, 07:02 PM

cMar

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Quote:

Originally Posted by StevenR91

Any rasp or hiss? Trying to decide if I should get HFC or RTP.

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05-16-2018, 08:40 PM

StevenR91

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Quote:

Originally Posted by cMar

Any rasp or hiss? Trying to decide if I should get HFC or RTP.

no rasp. Maybe a little when cold but it goes away once the exhaust warms up. And I hear some hiss on deceleration in very low rpm range.

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05-17-2018, 12:39 AM

darklordsep

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I have a top speed axle back and it has 0 drone. It's not too loud, but it's definitely louder than stock.

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05-17-2018, 07:34 AM

DollHouz

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For best gain and sound HFC's axelback will only give you sound no noticeable gain

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05-18-2018, 10:37 PM

Kstebbins02

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Stillen vs injen long tubes

Hey guys so I just ordered my car back exhaust system for my car so my next purchase would be my intake I think I narrowed it down to Stillen or injen but I want everyone’s input and what people prefer not looking for tremendous gains just a little something to waken up the car

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05-22-2018, 01:27 PM

Surfnazi

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Cats will give more gain vs axle back I'd do it right and do whole system and do the job once

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08-06-2018, 09:54 AM

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dswarr

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Quote:

Originally Posted by StevenR91

I have a Takeda intake, DC Sports headers, Y-pipe, Beluga axle back exhaust on my 08 Coupe S. I understand the most restrictive point are the stock cats (and maybe mid resonator). I've been considering the Kinetix HFC, any thoughts? I would also get a tune after that I suppose. Any thoughts on whether I should also get the mid-pipe replaced?