Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)
View Poll Results: Which HFC will give me the loudest stock exhaust tone?
Stillen
10
7.94%
Fast Intentions
85
67.46%
Crawford
31
24.60%
Voters: 126. You may not vote on this poll

High Flow Cat's

Thread Tools
 
Search this Thread
 
Rate Thread
 
  #16  
Old 02-10-2008, 07:28 PM
DRA-G35-ON's Avatar
Registered User
Thread Starter
iTrader: (1)
Join Date: Feb 2006
Location: NY
Posts: 616
Received 0 Likes on 0 Posts
Thanks for all the info guys, seems like you can't really go wrong with Crawford or FI...

Anybody else with input, keep it comin
 
  #17  
Old 02-11-2008, 01:48 AM
Skaterbasist's Avatar
Retired SuperMod
iTrader: (16)
Join Date: Feb 2006
Location: Southern Cali --> 818
Posts: 13,068
Received 101 Likes on 66 Posts
My vote goes for fast intentions. Though I don't have HFC, I do have a pair of their resonated test pipes... great quality pipes

.
 
  #18  
Old 02-11-2008, 02:04 AM
Calvin's Avatar
Overglorified Altima
iTrader: (65)
Join Date: Jun 2006
Location: Chicago
Posts: 53,506
Received 187 Likes on 128 Posts
Originally Posted by DRA-G35-ON
O RLY- In that thread what cutout were you talking about that was open?
i used to have an electronic exhaust cutout welded into my stock midpipe.
 
  #19  
Old 02-11-2008, 06:35 PM
OCG35's Avatar
Registered User
iTrader: (33)
Join Date: Nov 2004
Location: OC - So Cal
Posts: 17,181
Received 154 Likes on 112 Posts
Crawford here
 
  #20  
Old 02-15-2008, 10:25 AM
DRA-G35-ON's Avatar
Registered User
Thread Starter
iTrader: (1)
Join Date: Feb 2006
Location: NY
Posts: 616
Received 0 Likes on 0 Posts
Originally Posted by jonahlw
I have crawford HFC w/ stock exhaust. Crawford older cats come w/ mounting brackets, but I think if you use the brackets it causes them to crack..so I didn't use them. Exhaust sounds puurrrfect for me..a little louder than stock. I would say they probably do as much or more than a regular catback exhaust as far as power gains if you car is N/A.

Also if you want a little more for sound, get a plenum spacer...cats+plenum space + stock exhaust sounds awesome...it really roars when you get on it, but otherwise it purrs.
I don't think they'll give you the same or more power gains as a catback exhaust... I'm assuming FI & Crawfords produce around the same performance gains, so I just want to get which ever one would make my stock exhaust tone louder than the other
 
  #21  
Old 02-15-2008, 12:57 PM
Hexxum001's Avatar
Registered User
iTrader: (19)
Join Date: Jul 2005
Location: SoCal//WestSiiiiiiiiiiiiiide
Posts: 10,899
Likes: 0
Received 5 Likes on 3 Posts
Fast Intentions FTMFW!!!
 
  #22  
Old 02-15-2008, 02:01 PM
elrooko's Avatar
Registered User
iTrader: (3)
Join Date: Aug 2003
Location: Ontario, Canada
Posts: 660
Likes: 0
Received 12 Likes on 11 Posts
+1 on the mounting issues. This is the main reason why I haven't picked up Cats yet. I am trying to find a set which are reasonably priced which use the stock mounting brackets. If FI modified their setup to use the tranny mounts, then I probablly would have bought those already. I have a FI exhaust waiting in the garage to go on before spring and I will probablly just install the cats and the exhaust at the same time.
 
  #23  
Old 02-16-2008, 01:35 AM
Hexxum001's Avatar
Registered User
iTrader: (19)
Join Date: Jul 2005
Location: SoCal//WestSiiiiiiiiiiiiiide
Posts: 10,899
Likes: 0
Received 5 Likes on 3 Posts
I can personally vouch for what Tony is saying. I have the FI exhaust and HFC's and they work perfectly together. There are no issues at all due to no mounting brackets. The fellas at GTM also commented to me what a nice setup the FI exhaust and cats are. You will not be disappointed at all.
 
  #24  
Old 02-16-2008, 01:36 AM
Skaterbasist's Avatar
Retired SuperMod
iTrader: (16)
Join Date: Feb 2006
Location: Southern Cali --> 818
Posts: 13,068
Received 101 Likes on 66 Posts
Originally Posted by elrooko
+1 on the mounting issues. This is the main reason why I haven't picked up Cats yet. I am trying to find a set which are reasonably priced which use the stock mounting brackets. If FI modified their setup to use the tranny mounts, then I probablly would have bought those already. I have a FI exhaust waiting in the garage to go on before spring and I will probablly just install the cats and the exhaust at the same time.
Why do you care so much about the mounting brackets?

.
 
  #25  
Old 02-16-2008, 02:04 AM
DaveB's Avatar
Registered User
iTrader: (9)
Join Date: Aug 2003
Location: Kansas City
Posts: 6,573
Likes: 0
Received 72 Likes on 51 Posts
Originally Posted by Skaterbasist
Why do you care so much about the mounting brackets?

.
Because they keep NVH down and keep the torquing loads on the exhaust down. The purpose of the bracket is not to support the weight of the OEM cats. It's to limit movement.
 
  #26  
Old 02-16-2008, 02:13 AM
Skaterbasist's Avatar
Retired SuperMod
iTrader: (16)
Join Date: Feb 2006
Location: Southern Cali --> 818
Posts: 13,068
Received 101 Likes on 66 Posts
Originally Posted by DaveB
Because they keep NVH down and keep the torquing loads on the exhaust down. The purpose of the bracket is not to support the weight of the OEM cats. It's to limit movement.
I understand that. But how do you know the purpose of the bracket is actually put in good use with the OEM setup (or any other aftermarket setup)? There's always all those hypothetical ideas floating around. Some of them are true, and some of them aren't proven to serve much purpose.

Having the brackets on was a nice thing, since there was really nothing to lose even though they aren't proven to have a significant effect. But having them off shouldn't be an issue either.

These brackets are something I can live without. The quality, fitment, & craftmanship of the test pipes I installed are top notch (although im sure the brackets are not really there to address the issue of quality or fitment).

.
 

Last edited by Skaterbasist; 02-16-2008 at 02:15 AM.
  #27  
Old 02-16-2008, 02:41 AM
G37Rider92649's Avatar
Registered User
iTrader: (38)
Join Date: Dec 2006
Location: SoCal...OC..714..
Posts: 5,605
Likes: 0
Received 37 Likes on 19 Posts
Haha high flow cats, i wish i was doing that again To the O.P you shouldn't be worrying about anything, its only Cats man haha, simple and easy to install stuff and worth the mod. I'm using the Kinetix HFC and honestly like it, but if in my opinion, Fast Intention all the way!!! No questions ask, no point in researching more, get F.I! Get it and it will fit, dont trip
 
  #28  
Old 02-16-2008, 04:22 AM
OCG35's Avatar
Registered User
iTrader: (33)
Join Date: Nov 2004
Location: OC - So Cal
Posts: 17,181
Received 154 Likes on 112 Posts
Originally Posted by FastIntentions
Trust me when I say this. You don't need the mounting brackets. It is extra dead weight. I wouldn't steer you in the wrong direction. If you have our exhaust then finish the deal and add the High Flow Cats, you won't be disappointed. Do it right and you only have to do it once...

Tony
Can you tell us the advantage (other than price, if applicable) over Crawford?
 
  #29  
Old 02-16-2008, 04:26 AM
OCG35's Avatar
Registered User
iTrader: (33)
Join Date: Nov 2004
Location: OC - So Cal
Posts: 17,181
Received 154 Likes on 112 Posts
Originally Posted by DaveB
Because they keep NVH down and keep the torquing loads on the exhaust down. The purpose of the bracket is not to support the weight of the OEM cats. It's to limit movement.
would an engine torque damper like Stillen resolve?... If not, please expound...
 
  #30  
Old 02-16-2008, 04:36 AM
OCG35's Avatar
Registered User
iTrader: (33)
Join Date: Nov 2004
Location: OC - So Cal
Posts: 17,181
Received 154 Likes on 112 Posts
Originally Posted by G35Rider92649
Haha high flow cats, i wish i was doing that again To the O.P you shouldn't be worrying about anything, its only Cats man haha, simple and easy to install stuff and worth the mod. I'm using the Kinetix HFC and honestly like it, but if in my opinion, Fast Intention all the way!!! No questions ask, no point in researching more, get F.I! Get it and it will fit, dont trip
As much as I appreciate your passion for the product you chose... I think it's bad advice to give... If someone told me "no questions asked"... and "no point in researching more" about ANY of my mods, I would ignore everything they had to say!

One of the most important things an enthusiast should do is research their @ss off!!!! Not only to determine specifics about the product they intend to buy, but to feel 100% confident that they made an "informed" decision.

This is true for any purchase - not just automotive. I researched bed manufacturers, TV, Computer, etc... I don’t base it on money; I base it on usage... If it's something I will use daily, or weekly, I want to know everything about it.

If it's my car... That's another story... I've done things that aren’t researchable... But at least others can research and learn from my issues, or triumphs
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: High Flow Cat's



All times are GMT -4. The time now is 05:30 AM.