HFC or resonators

p-streets · 09-14-2013, 09:38 AM

What's up fellas question for people with better knowledge then me. I have a xpipe with a set of resonators and no cats looking to add either another set of resonators or HFC. Which will be better option to pair up with a Meisterschaft gt2. I currently have no cats and a Remus race thanks in advance fellas.

THE-FN-MAN · 09-14-2013, 03:38 PM

Hfc will rob a few horses (minimal and probably not noticeable) where as the resonators would most likely just reduce cabin resonance I think.

Ezio · 09-14-2013, 03:48 PM

I would go HFC because you will have no smell. Personally i don't mine some exhaust smell but , friends, family, girfriend etc might not.

p-streets · 09-14-2013, 06:17 PM

I'm not worried about smell more noise then anything. I just don't want it louder then my current set up

lsmkr01 · 09-14-2013, 07:25 PM

I'd put another set of resonators. Even quad resonated the GT2 will be really really loud... and I have a high tolerance for loud exhausts. Post a video with whatever set up you end up with.

HeartMD · 09-14-2013, 11:34 PM

Quote:

Originally Posted by Ezio

I would go HFC because you will have no smell. Personally i don't mine some exhaust smell but , friends, family, girfriend etc might not.

The akra evo has a smell albiet mild (or at least to me) but definately stinky and it has HFC.

Ezio · 09-14-2013, 11:37 PM

Quote:

Originally Posted by HeartMD

The akra evo has a smell albiet mild (or at least to me) but definately stinky and it has HFC.

a well made HFC when warmed shouldn't smell, bottom line.

I have used them in the past.

HeartMD · 09-15-2013, 10:46 AM

Quote:

Originally Posted by Ezio

a well made HFC when warmed shouldn't smell, bottom line.

I have used them in the past.

You are right when warmed it doesnt smell but on cold start is smells like ass. At least thats my experience with my Akra evo.

slicer · 09-15-2013, 10:59 AM

Quote:

Originally Posted by Ezio

a well made HFC when warmed shouldn't smell, bottom line.

I have used them in the past.

My Akra HFC's always smell. Must not be high quality....

ms372 · 09-15-2013, 11:03 AM

if your going to run a gt2 your only good option with an x-pipe is staying stock IMO. I ran a gt2 with a challenge sport and the exhaust was way too loud. My car is not my daily in anyway put it gets annoying and gt2 will become to raspy. Your only other good option is keeping or using HFC in the front where your primary cats used to be, this will kinda tame it down a bit. Running around with an exhaust system that hit over 115db+ on the streets or the track gets annoying to you and everyone around you.

ms372 · 09-15-2013, 11:05 AM

Quote:

Originally Posted by slicer

My Akra HFC's always smell. Must not be high quality....

+1
no matter how high quality if your running 200 or 100 (HFC) your car will always smell.

Dave07997S · 09-15-2013, 12:21 PM

Wait to you run some race gas...smells unbelievable...

Keep in mind that a good set of HFCs like the HJS cats run a pretty penny. If I was to run a aftermarket car I would look at Random Technologies. They aren't as expensive but they are a good cat. A lot of cats that the aftermarket sells are inferior and they will start to break down and clog. Run a good cat, its just that they will cost more than a set of resonators which can be had for in the $80 range ea..

Dave

p-streets · 09-15-2013, 12:34 PM

Thanks for info guys I think I'm going to put on the second set of resonators and keep the Remus for time being. I heard a gt2 with xpipes and no cats sounds sexy but to much for DD. and don't want to lose the power in going to stock pipe. Maybe ill like this set up once its done ill keep you guys updated

p-streets · 09-15-2013, 12:36 PM

Quote:

Originally Posted by ms372

if your going to run a gt2 your only good option with an x-pipe is staying stock IMO. I ran a gt2 with a challenge sport and the exhaust was way too loud. My car is not my daily in anyway put it gets annoying and gt2 will become to raspy. Your only other good option is keeping or using HFC in the front where your primary cats used to be, this will kinda tame it down a bit. Running around with an exhaust system that hit over 115db+ on the streets or the track gets annoying to you and everyone around you.

I think I seen your ride on you tube I remember the name and yea that video was like holy F$&k that's loud lol I like it tho just not everyday driving tho

Ezio · 09-15-2013, 02:52 PM

Quote:

Originally Posted by ms372

+1
no matter how high quality if your running 200 or 100 (HFC) your car will always smell.

its just simply not true. friends and i have used HFC on much more powerful builds. They may take little longer to warm up, but it was night and day compared to catless setups.

although we always had custom dyno tunes done.

09-14-2013, 09:38 AM	#1
p-streets M3NTAL 22 Rep 299 Posts Drives: 09 E92 M3 Join Date: Jun 2009 Location: LAND OF THE LOST TEXAS iTrader: (1)	HFC or resonators What's up fellas question for people with better knowledge then me. I have a xpipe with a set of resonators and no cats looking to add either another set of resonators or HFC. Which will be better option to pair up with a Meisterschaft gt2. I currently have no cats and a Remus race thanks in advance fellas.
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09-14-2013, 03:38 PM	#2
THE-FN-MAN Captain 43 Rep 890 Posts Drives: E92 M3 x2 Join Date: Feb 2012 Location: the wood iTrader: (0)	Hfc will rob a few horses (minimal and probably not noticeable) where as the resonators would most likely just reduce cabin resonance I think.
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09-14-2013, 03:48 PM	#3
Ezio Brigadier General 802 Rep 4,224 Posts Drives: 2026 M4 Join Date: Nov 2012 Location: MI iTrader: (0)	I would go HFC because you will have no smell. Personally i don't mine some exhaust smell but , friends, family, girfriend etc might not.
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09-14-2013, 06:17 PM	#4
p-streets M3NTAL 22 Rep 299 Posts Drives: 09 E92 M3 Join Date: Jun 2009 Location: LAND OF THE LOST TEXAS iTrader: (1)	I'm not worried about smell more noise then anything. I just don't want it louder then my current set up
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09-14-2013, 07:25 PM	#5
lsmkr01 Lieutenant Colonel 50 Rep 1,627 Posts Drives: E92 M3 Join Date: Feb 2007 Location: SC iTrader: (0)	I'd put another set of resonators. Even quad resonated the GT2 will be really really loud... and I have a high tolerance for loud exhausts. Post a video with whatever set up you end up with.
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09-15-2013, 11:03 AM	#10
ms372 White Shark 107 Rep 918 Posts Drives: AW E92 m3 6MT Join Date: Mar 2012 Location: Montreal iTrader: (0)	if your going to run a gt2 your only good option with an x-pipe is staying stock IMO. I ran a gt2 with a challenge sport and the exhaust was way too loud. My car is not my daily in anyway put it gets annoying and gt2 will become to raspy. Your only other good option is keeping or using HFC in the front where your primary cats used to be, this will kinda tame it down a bit. Running around with an exhaust system that hit over 115db+ on the streets or the track gets annoying to you and everyone around you. __________________ ESS \| Challenge x-pipe \| Akrapovic \| Stoptech BBK (380/355) \|Ohlins R&T \| Dinan \| Vorsteiner \| Downforce USA \| Varis Diffuser \| Gintani \| UUC \| BMW Performance \| Macht Schnell \| Forgestar F14's SDC 19x9.5F 19x11R \| 255.35 295.30
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09-15-2013, 12:21 PM	#12
Dave07997S Major General 2342 Rep 5,140 Posts Drives: 2024 BMW M2 Toronto Red 6MT Join Date: May 2009 Location: El Segundo, CA iTrader: (1)	Wait to you run some race gas...smells unbelievable... Keep in mind that a good set of HFCs like the HJS cats run a pretty penny. If I was to run a aftermarket car I would look at Random Technologies. They aren't as expensive but they are a good cat. A lot of cats that the aftermarket sells are inferior and they will start to break down and clog. Run a good cat, its just that they will cost more than a set of resonators which can be had for in the $80 range ea.. Dave __________________ 2024 BMW M2 Toronto Red 6MT (Sold) 2020 Ford Mustang GT 6MT PP1 444rwhp 2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk, 2001 BMW M3
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09-15-2013, 12:34 PM	#13
p-streets M3NTAL 22 Rep 299 Posts Drives: 09 E92 M3 Join Date: Jun 2009 Location: LAND OF THE LOST TEXAS iTrader: (1)	Thanks for info guys I think I'm going to put on the second set of resonators and keep the Remus for time being. I heard a gt2 with xpipes and no cats sounds sexy but to much for DD. and don't want to lose the power in going to stock pipe. Maybe ill like this set up once its done ill keep you guys updated
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