Who makes the best HFC's without rasp?

Nikon FM · 02-08-2010, 12:19 AM

The 18" resonators will provide some lower frequency noise reduction over the 12". The CF is a different build (material and modal response) than the SS and just responds a little differently so there is most likely a subtle sound difference. I've only driven mine two days but am liking what I hear.

Nitex · 02-08-2010, 09:46 AM

Off topic, but i see your from snoqualmie Nikon! I just moved from Everett few months ago, i used to ride stevens, baker, and snoqualmie! Anyways your picture reminds me of all the trees! we don't have them down here in Texas : (

Nikon FM · 02-08-2010, 08:37 PM

Quote:

Originally Posted by Nitex

Off topic, but i see your from snoqualmie Nikon! I just moved from Everett few months ago, i used to ride stevens, baker, and snoqualmie! Anyways your picture reminds me of all the trees! we don't have them down here in Texas : (

I like to trail run................the trees are what makes this place amazing .....oh that and the mountains

I'd really find it difficult to move and would do everything I could to stay here.

On topic: To the OP, sound quality is so personally based because your decision will be based on how you imagine the system will sound versus what the system will sound like in reality. If you want strong (friggen loud) low frequency go with minimal treatment ...(12" CF and no resonators). If you want some low frequency sound increase without rasp go with treated resonated HFCs and CF resonators...12" or 18" will affect how much low frequency noise is attenuated. The 18" will attenuate the lowest frequency noise over the 12". The quietest solution would be resonated HFC and 18" stainless resonators.

Have fun!

SophiaZ · 02-09-2010, 04:27 PM

Quote:

Originally Posted by Nikon FM

I like to trail run................the trees are what makes this place amazing .....oh that and the mountains

I'd really find it difficult to move and would do everything I could to stay here.

On topic: To the OP, sound quality is so personally based because your decision will be based on how you imagine the system will sound versus what the system will sound like in reality. If you want strong (friggen loud) low frequency go with minimal treatment ...(12" CF and no resonators). If you want some low frequency sound increase without rasp go with treated resonated HFCs and CF resonators...12" or 18" will affect how much low frequency noise is attenuated. The 18" will attenuate the lowest frequency noise over the 12". The quietest solution would be resonated HFC and 18" stainless resonators.

Have fun!

Thanks for that!

drisko · 02-08-2010, 01:56 PM

One other thing you also might want to consider is whether or not the HFC will give a CEL. I have had the F.I. HFCs on for about 8000 miles now and not a single CEL.

F.I. Inc. · 02-08-2010, 01:59 PM

Quote:

Originally Posted by drisko

One other thing you also might want to consider is whether or not the HFC will give a CEL. I have had the F.I. HFCs on for about 8000 miles now and not a single CEL.

Hey bud, hope that all is well.

Look at that, 8000 miles and no CEL. I do not expect you to get one in 8000 more...

Tony

spearfish25 · 02-08-2010, 02:03 PM

Quote:

Originally Posted by SophiaZ

Also..for the res HFC, placing my order for them it says pick one Extra O2 bung: passenger, driver, or both pipes. What are these 02 bungs?

Extra bungs are placed before the cat core and are used for wide-band tuning. You may never need them.

Quote:

Originally Posted by drisko

One other thing you also might want to consider is whether or not the HFC will give a CEL. I have had the F.I. HFCs on for about 8000 miles now and not a single CEL.

There are plenty of threads about this. The more of a brand's HFCs that are out there, the more likely you are to hear about CELs. Berk has probably sold the most to our community and theirs have the most CEL reports. ERZ has only sold a couple to a few of us on here, and there haven't been any CELs. FI hasn't outfitted that many of our 370Z community members, so the numbers are still relatively low to get a good feel for CELs. They make nice products with a lot of R&D though, so I imagine they've done their homework in preventing CELs. Good to know that 8k miles are CEL free for you.

F.I. Inc. · 02-08-2010, 02:18 PM

Quote:

Originally Posted by spearfish25

FI hasn't outfitted that many of our 370Z community members, so the numbers are still relatively low to get a good feel for CELs. They make nice products with a lot of R&D though, so I imagine they've done their homework in preventing CELs. Good to know that 8k miles are CEL free for you.

Actually we have sold somewhere between 50-70 sets of HFC for the 370Z. If you include the G37 as well as HR 350Z we have sold hundreds of sets. Those cars are different than the 370 but the engine is virtually the same. What I am getting at is that we have plenty out there.

02-08-2010, 12:19 AM	#1 (permalink)
Nikon FM Track Member Join Date: Jan 2009 Location: Snoqualmie WA Posts: 973 Drives: 03 996TT Porsche Rep Power: 607	The 18" resonators will provide some lower frequency noise reduction over the 12". The CF is a different build (material and modal response) than the SS and just responds a little differently so there is most likely a subtle sound difference. I've only driven mine two days but am liking what I hear. __________________ Buddy Revell: "One man's sooner is another man's later"

02-08-2010, 09:46 AM	#2 (permalink)
Nitex Track Member Join Date: Jan 2010 Location: Seattle Posts: 848 Drives: '13 GTI Stage 2 UNI Rep Power: 17	Off topic, but i see your from snoqualmie Nikon! I just moved from Everett few months ago, i used to ride stevens, baker, and snoqualmie! Anyways your picture reminds me of all the trees! we don't have them down here in Texas : ( miniZilla likes this.

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02-08-2010, 01:56 PM	#5 (permalink)
drisko Base Member Join Date: Jan 2009 Location: So Cal Age: 44 Posts: 160 Drives: 09 370Z PW Tour S 6M Rep Power: 17	One other thing you also might want to consider is whether or not the HFC will give a CEL. I have had the F.I. HFCs on for about 8000 miles now and not a single CEL.