HFCS resonated vs non-resonated sound diff

brucelidat · 06-15-2013, 03:33 AM

So I currently have FI resonated HFCs. I am thinking of getting momentum headers and z1 350z HFCs which I do not believe are resonated. I was wodnering how the new non-resonated cats will sound different. Will there be more drone or rasp? Will it be any louder?

Any input on how headers will sound will be helpful as well. I don't want my car to be super loud. Where it's at currently in terms of volume is just right, don't want to be much louder.

DarkJak · 06-15-2013, 05:04 AM

From what I read, the difference between the resonated HFC and unresonated hfc volume is less than the difference between a resonated test pipe and an unresonated hfc.

06-15-2013, 03:33 AM	#1 (permalink)
brucelidat A True Z Fanatic Join Date: Jun 2011 Location: temple city, ca Posts: 2,432 Drives: 2011 370z 7AT GM Sp Rep Power: 31	HFCS resonated vs non-resonated sound diff So I currently have FI resonated HFCs. I am thinking of getting momentum headers and z1 350z HFCs which I do not believe are resonated. I was wodnering how the new non-resonated cats will sound different. Will there be more drone or rasp? Will it be any louder? Any input on how headers will sound will be helpful as well. I don't want my car to be super loud. Where it's at currently in terms of volume is just right, don't want to be much louder. __________________ Works Emotion CR Ultimate - FI CBE w/ 18" resonators - Ecutek - eibach sways - Quaife - FI LTH w/race cats - kw v3 - spl - Topgunz SC - 488whp 398trq

06-15-2013, 05:04 AM	#2 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,397 Drives: 2009 370Z Rep Power: 16804	From what I read, the difference between the resonated HFC and unresonated hfc volume is less than the difference between a resonated test pipe and an unresonated hfc. __________________ @stupidtoycars \| My track vids 09 7AT\|MCS 2WNR\|Topgunz Rotrex\|Ecutek (Eugene)\|Maxxis RC1\|Titan-7 TS-5\|OSG LSD\|Rear Mount Derale Oil Cooler (WIP)+25 Trans Cooler\|Fismo\|G-LOC R12/R10\|Zeta III L\|NLR Wing and Splitter\|CJM Pan and Fuel Hat\|Radium Surge Tank\|AP Racing CP9668

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