CNT HFC's + FI non resonated exhaust

babbagandu

Looking to pic up the CNT cats but can someone please tell me if this combo will make me raspy?

Staples

Yes, very much so.

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'08 Infiniti G37s - Forced Induction Fed

SS_Firehawk

Gonna sound like a baseball card stuck in your spokes

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F.I. Inc.

Contrary to what some think, it should not have too much rasp! The CNT HFC's will obviously provide more back pressure than resonated or straight test pipes. This will help keep the rasp down. Rasp is a lot like drone. They are both subjective to the ear and what does to one person may not to the other!

With that being said, if you add resonators to your x pipe this will help smoothen out your exhaust note. It will also create more depth and fullness to your exhaust note!

Call me if you have any questions.

Thanks, Tony

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busa37z

I have the CNT with FI 18 Resonated, and I have very little rasp if any. Like Tony said the x pipe smooths the sound out.

babbagandu

what about getting the FI resonated cats? Will that have a similar effect as having resonators in the x-pipe?

Juruki

i had 12" resonators with Berk HFCs and there was rasp. I would go with 18's if you wanna get HFCs

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09 370z - 7AT
Volk Racing TE37SL / BC Coilovers / Berk HFC / TopSpeed CBE + Y-Pipe / Mines Spoiler

babbagandu

ahh such a bummer. I don't really want to make any changes to my catback. Does anybody have the FI resonated HFC's with the FI non-resonated exaust?

I am trying to decide between the new resonated ARK HFC's and the FI resonated HFC's. If the FI ones have already been proven to eliminate rasp then I will get those for sure. Otherwise I guess I have to take a risk and hope that the ARK cats can live up to what ARK has promised

Whitemtl370

What about ART test pipes? Supposedly they eliminate rasp better than hfc

babbagandu

I would love to get test pipes but I have to get yearly emissions testing where I live. Plus I am scared of what will happen when the Fuzz smell the fumes and pull me over

BTW I live in the Atlanta area and have asked for input from other Atlanta members about this before but never feel like I have gotten a good answer. If anyone can chime in about how the get away with having no cats please let me know or send a PM if you would rather do that. Thanks!

christian370z

I don't have any rasp even when cold with my Berk HFCs and FI 12" resonated exhaust. Here's a sound clip:

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SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

omgZ

I don't think its the cbe, its the hfc. I have invidia cbe and have a rasp/hiss during deceleration. Nothing major, I say just go for it.

babbagandu

That is a very clean sound, I like it. I just wish I knew if I would sound that clean without resonators.

Which HFC's do you have?

mults

If you are going to ZDayZ, there may be the combination of exhaust components that have what you are looking for before you plunk down any cash! I just installed the Berk CBE and I want to get the Berk HFC's but I want to hear what the final product sounds like. I've heard a ton of different ones on YouTube, but there is enough difference to hearing them in person that makes me want to wait. However, I may not have the patience to wait until ZDayZ is over before I get the HFC's !!! Patience is not one of my strong virtues when it comes to the Z.

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mults
40th Anniversary 'Z', 312.06HP/260.58TQ (Dynosty EcuTek Tune)
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Berk HFC + CBE, R2C CAI, Clear Bra, Cleveland Z Club

babbagandu

BUMP! Does anybody have the FI resonated HFC + FI non-resonated catback combo?