F.I. HFC resonated cat pipes

m4a1mustang · 03-26-2010, 08:49 AM

If you have no worries about emissions, sure. But the test pipes are only good for maybe 2-3 hp over HFCs...

fatcat777 · 03-26-2010, 11:12 AM

Quote:

Originally Posted by m4a1mustang

If you have no worries about emissions, sure. But the test pipes are only good for maybe 2-3 hp over HFCs...

these are cats and not test pipes. they should be fine for passing emissions.

F.I. Inc. · 03-27-2010, 03:38 PM

Quote:

Originally Posted by fatcat777

these are cats and not test pipes. they should be fine for passing emissions.

They are high flow cats and resonated pipes all in one. We are the only ones in the world that offer them!

wheee! · 03-27-2010, 06:20 PM

Quote:

Originally Posted by F.I. Inc.

They are high flow cats and resonated pipes all in one. We are the only ones in the world that offer them![/I][/B]

I wonder if you have any audio clips with them installed. Stock and CBE version exhaust too.

I like the idea of reduced obstruction/greater flow but with some noise reduction too. I would like to add these into a CBE exhaust but not at the expense of noise.

Nikon FM · 03-27-2010, 06:41 PM

"Noise" is personally subjective. If the restriction (OEM catalytic converters) is removed lower frequency noise will be generated. The resonated sections help reduce noise in some of the frequency bands but lower frequency sound will still be heard.

Coon-azz · 06-03-2013, 02:40 PM

Quote:

Originally Posted by F.I. Inc.

They are high flow cats and resonated pipes all in one. We are the only ones in the world that offer them![/I][/B]

Wanted find out more about this item. I'm not looking so much for HP gains, just want to change the exhaust note to something more suitable for the Z. Deep tone and no rasp...hate that tin-can rasp sound.

Sales@F.I. Inc. · 06-03-2013, 03:05 PM

Quote:

Originally Posted by Coon-azz

Wanted find out more about this item. I'm not looking so much for HP gains, just want to change the exhaust note to something more suitable for the Z. Deep tone and no rasp...hate that tin-can rasp sound.

Resonated HFCs are the best of both worlds. On the G37 side this is an extremely popular product because its proven over and over and over again to keep away any unwanted rasp/drone but still giving you the added power gains you are looking for. If you are ready to place an order, or have any other questions please give me a call here at the shop!

Thank you, Blake

peleincubus · 07-13-2013, 12:38 AM

So what is the difference in having only the resonated CBE, versus having the resonated HFC also?? Meaning besides the minimal HP increase how does it change the sound. I'm assuming to some degree louder.

F.I. Inc. · 07-14-2013, 11:05 PM

Quote:

Originally Posted by peleincubus

So what is the difference in having only the resonated CBE, versus having the resonated HFC also?? Meaning besides the minimal HP increase how does it change the sound. I'm assuming to some degree louder.

The resonator in the Cat will perform just like the resonator in the X Pipe. It is designed to be a noise canceling device. It does not hinder performance at all due to it's straight through perforated core design.

Now the resonator in the cat is obviously not as effective as the resonator in the X Pipe. Reason being it is much shorter and the O.D. Overall Diameter is smaller as well.

Now having resonators in the Cats and CBE will smoothen and quiet your exhaust note down.

Thanks, Tony

03-26-2010, 08:49 AM	#1 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6964	If you have no worries about emissions, sure. But the test pipes are only good for maybe 2-3 hp over HFCs... __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

03-27-2010, 06:41 PM	#5 (permalink)
Nikon FM Track Member Join Date: Jan 2009 Location: Snoqualmie WA Posts: 973 Drives: 03 996TT Porsche Rep Power: 608	"Noise" is personally subjective. If the restriction (OEM catalytic converters) is removed lower frequency noise will be generated. The resonated sections help reduce noise in some of the frequency bands but lower frequency sound will still be heard. __________________ Buddy Revell: "One man's sooner is another man's later"

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07-13-2013, 12:38 AM	#8 (permalink)
peleincubus Enthusiast Member Join Date: Jan 2012 Location: Austin, tx Posts: 255 Drives: PW 14' 370Z Rep Power: 15	So what is the difference in having only the resonated CBE, versus having the resonated HFC also?? Meaning besides the minimal HP increase how does it change the sound. I'm assuming to some degree louder.