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Anyone running HFC with stock catback?

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Old 07-20-2010, 11:06 PM
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antirice
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Anyone running HFC with stock catback?

Just wondering how much it change the exhaust tone and the performance gain. Catbacks cost too much $$$ I just can't see myself getting one. HFC on the other hand cost about half of the money and it replaces the most restrictive part of the car.
Old 07-20-2010, 11:46 PM
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TheLocNar
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Raspy on the sedan.
Old 07-21-2010, 03:48 PM
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MOB
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I was thinking along the same lines as the OP.....

What about changing out to a better flowing Y-pipe? Any benefit?
Old 07-21-2010, 05:56 PM
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TheLocNar
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You will end up replacing the whole thing, if you just start in pieces. Just save up and get a whole system.
Old 07-22-2010, 01:58 AM
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da mayor
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Saltfish has HFC's on a stock exhaust........sounds good
Old 07-22-2010, 02:31 AM
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TheLocNar
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Had the ERZ HFCs on my stock sedan exhaust. Thought the rasp would go away before I got my FI CBE, but it never did. But it's totally gone now...
Old 07-22-2010, 09:46 AM
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LightsOut
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Originally Posted by MOB
I was thinking along the same lines as the OP.....

What about changing out to a better flowing Y-pipe? Any benefit?
ypipe is already a free flowing. The whole exhaust is already free flowing. Exhaust should be a last mod for the G, or unless you just want sound first...


just get HFC and Tanabe mufflers.
Old 07-23-2010, 03:19 AM
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SnoopSER
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I heard it really a waste of money to replace the exhaust on a G because there is really no system that will give more power than stock< so if your getting exhaust it's basically for sound
Old 07-24-2010, 04:06 AM
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adihere
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I recently replaced the cats with berks hfc (still have stock exhaust for now) and I must say hands down best bang for the buck, makes the muted stock sedan exhaust really come alive like the Z's and G coupes maybe a tad deeper but same tone...Sound great and I really pleased with it...performance wise it does feel a bit more peppier and free flowing through all rpm ranges but the sound really did it for me. Now I can wait a lil longer till my exhaust (Invidia for AWD's) is made. I actually have sound clips before and after and if someone could help how to upload'em i post'em (files are pretty big - hd video)
Old 07-24-2010, 12:31 PM
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antirice
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Originally Posted by adihere
I recently replaced the cats with berks hfc (still have stock exhaust for now) and I must say hands down best bang for the buck, makes the muted stock sedan exhaust really come alive like the Z's and G coupes maybe a tad deeper but same tone...Sound great and I really pleased with it...performance wise it does feel a bit more peppier and free flowing through all rpm ranges but the sound really did it for me. Now I can wait a lil longer till my exhaust (Invidia for AWD's) is made. I actually have sound clips before and after and if someone could help how to upload'em i post'em (files are pretty big - hd video)
Cool, any noticeable rasp in the sound? Any issue with the check engine light? I am looking into Berks and FI HFC right now.

You can upload the vid to youtube or vimeo.
Old 07-24-2010, 11:33 PM
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adihere
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you know what i never really heard the rasp..at all like some mention nor and get any CEL (berks are good like that) however i do have that hiss that all seem to have after reving, its not really noticable...and I did have some annoying exhaust vibrating/grindy type of sound for the 1st week I thought it was because i didnt have the gaskets on there. Berks apparently forgot to send'em to me and I couldnt wait so I got them hooked up anyways. They are on now but still have some of that vibrating(like 2 thin pieces of metal vibrating against each other) sound only around shift points but it seems to be quieting down a bit...idk but i think it from the stock exhaust cuz i used to hear it but in a more muted fashion when it was stock new as well...ill see when I get my exhaust.

Ill try to work on getting those vids up

Last edited by adihere; 07-26-2010 at 05:55 AM.
Old 07-26-2010, 06:00 AM
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adihere
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ok got that video of the before and after hfc's with stock exhaust upload...

<object width="400" height="300"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://vimeo.com/moogaloop.swf?clip_id=13640292&amp;server=vimeo.co m&amp;show_title=1&amp;show_byline=1&amp;show_port rait=0&amp;color=&amp;fullscreen=1" /><embed src="http://vimeo.com/moogaloop.swf?clip_id=13640292&amp;server=vimeo.co m&amp;show_title=1&amp;show_byline=1&amp;show_port rait=0&amp;color=&amp;fullscreen=1" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="400" height="300"></embed></object><p><a href="http://vimeo.com/13640292">G37 sedan before/after Berk HFC's</a> from <a href="http://vimeo.com/user4351929">Adihere</a> on <a href="http://vimeo.com">Vimeo</a>.</p>
Old 07-26-2010, 11:14 PM
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wow big difference........nice difference at that
Old 07-27-2010, 12:43 AM
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adihere
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yea bro you gotta get'em, you'll luv the sound of your coupe so much better
Old 07-27-2010, 01:26 AM
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Originally Posted by adihere
you know what i never really heard the rasp..at all like some mention nor and get any CEL (berks are good like that) however i do have that hiss that all seem to have after reving, its not really noticable...and I did have some annoying exhaust vibrating/grindy type of sound for the 1st week I thought it was because i didnt have the gaskets on there. Berks apparently forgot to send'em to me and I couldnt wait so I got them hooked up anyways. They are on now but still have some of that vibrating(like 2 thin pieces of metal vibrating against each other) sound only around shift points but it seems to be quieting down a bit...idk but i think it from the stock exhaust cuz i used to hear it but in a more muted fashion when it was stock new as well...ill see when I get my exhaust.

Ill try to work on getting those vids up
that's the nature of hfc's - they almost all have some sort of hiss.


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