Register My Garage Arcade V.I.P Members List Calendar Mark Forums Read
Go Back   my6thgen.org - Maxima Forum > my6thgen.org - Very Useful Information > Ask Your Technical & General Questions > Intakes, Headers & Exhaust

Reply
ExclamationThis thread is more than 150+ days old. If you still feel it is necessary to bump this thread, you have the permission to do so. Please click the checkbox below and post your reply.
 
Thread Tools
Old 04-08-2011, 10:04 PM   #126
Senior Member
my6thgen.org Profile Info.
 
twisted1's Avatar
 
Join Date: Dec 2010
Official Member #: 1494
Last Online: 02-11-2012 05:14 AM
Location: louisiana
Posts: 626

Reputation Level: 13
twisted1 is on a distinguished road

Participation Level: 3%
Activity: 3% Activity: 3% Activity: 3%
Default Re: Headers vs High Flow Precats

I have magnaflow hf cats with custom true duals. Havnt got the car dyno yet, but im guessing they prob don't add much hp. All dyno sheets I see for 350z show that h/e/i don't really produce much hp over stock. Best bet is to have ecu flash after installing mods, but again some dynos are off +\- couple hp
__________________
Stillen lip kit, black housed headlamps, 370z 18s, 350z 17's on drs, blue led fogs, aem wideband o2,apexi safcll, 75shot zex wet kit, skunk2 cans, custom y&b pipes, 3rd cat & resonator delete, magnaflow precats, nwp spacers, kn cai, and walbro 255 still in box. Dyno #s coming soon....
twisted1 is offline   Send a private message to twisted1 Find more posts by twisted1 Add twisted1 to Your Friends list Reply With Quote top
Old 04-09-2011, 01:12 AM   #127
Newbie
my6thgen.org Profile Info.
 
miggs23's Avatar
 
Join Date: Aug 2010
Official Member #: 517
Last Online: 04-17-2016 05:26 PM
Location: Downsouth FL
Posts: 6

Reputation Level: 0
miggs23 is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%
Default Re: Headers vs High Flow Precats

Thanks for the tip cleanmaxx
miggs23 is offline   Send a private message to miggs23 Find more posts by miggs23 Add miggs23 to Your Friends list Reply With Quote top
Old 02-11-2012, 12:22 PM   #128
my6thgen.org Profile Info.
 
EddyMaxx's Avatar
 
Join Date: Jan 2010
Official Member #: 1
Location: Bat-Brooklyn, NYC
Posts: 34,336

Reputation Level: 20
EddyMaxx is a splendid one to beholdEddyMaxx is a splendid one to beholdEddyMaxx is a splendid one to beholdEddyMaxx is a splendid one to beholdEddyMaxx is a splendid one to beholdEddyMaxx is a splendid one to beholdEddyMaxx is a splendid one to behold

Participation Level: 100%
Activity: 100% Activity: 100% Activity: 100%


Visit EddyMaxx's Facebook Visit EddyMaxx's PS3 Profile Visit EddyMaxx's YouTube
Default Re: Headers vs High Flow Precats

BUMP!
__________________
04' Nissan Maxima - [Supercharged w/ HR Swapped Motor & Fully Built Auto Trans]
98' Nissan Maxima - [VQ35DE 6-Speed Supercharged]

6thgen 2014 Build Thread
EddyMaxx is offline   Send a private message to EddyMaxx Find more posts by EddyMaxx Add EddyMaxx to Your Friends list Reply With Quote top
Old 02-11-2012, 12:41 PM   #129
Official Member
my6thgen.org Profile Info.
 
Maximusberg's Avatar
 
Join Date: Feb 2010
Official Member #: 71
Last Online: 10-22-2015 10:00 PM
Location: Cherry Hill, NJ
Posts: 420

Reputation Level: 10
Maximusberg is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%
Default Re: Headers vs High Flow Precats

bump bump
__________________
Maximusberg is offline   Send a private message to Maximusberg Find more posts by Maximusberg Add Maximusberg to Your Friends list Reply With Quote top
Old 02-11-2012, 12:49 PM   #130
Mile High Maxima
my6thgen.org Profile Info.
 
Apollos2's Avatar
 
Join Date: Aug 2010
Official Member #: 510
Last Online: 06-06-2016 08:24 PM
Posts: 1,955

Reputation Level: 34
Apollos2 has a spectacular aura aboutApollos2 has a spectacular aura aboutApollos2 has a spectacular aura about

Participation Level: 27%
Activity: 27% Activity: 27% Activity: 27%
Default Re: Headers vs High Flow Precats

Do they still make these?
__________________
Cardomain = Silver stream


Click the image to open in full size.Click the image to open in full size.
Apollos2 is offline   Send a private message to Apollos2 Find more posts by Apollos2 Add Apollos2 to Your Friends list Reply With Quote top
Old 02-11-2012, 01:45 PM   #131
Official Member
my6thgen.org Profile Info.
 
hero782's Avatar
 
Join Date: Jul 2010
Official Member #: 335
Last Online: 07-05-2018 03:34 PM
Location: Los Angeles
Posts: 1,834

Reputation Level: 23
hero782 will become famous soon enoughhero782 will become famous soon enough

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%

My Awards:
Spotlight Ride Of The Month  


/ Point Value: 5

Official Ride  


/ Point Value: 10

Default Re: Headers vs High Flow Precats

I'll be installing my headers next month, so I should be able to compare both since I have the high flow cats on right now.
hero782 is offline   Send a private message to hero782 Find more posts by hero782 Add hero782 to Your Friends list Reply With Quote top
Old 02-12-2012, 06:35 PM   #132
Senior Member
my6thgen.org Profile Info.
 
amaxxf09's Avatar
 
Join Date: Sep 2010
Official Member #: 860
Last Online: 04-20-2018 06:44 PM
Location: Bellflower, CA
Posts: 794

Reputation Level: 11
amaxxf09 is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%

My Awards:
Active Member  


/ Point Value: 5

Default Re: Headers vs High Flow Precats

ok heres my question: are the precats the catalytic converter or what?
__________________
<img src=http://my6thgen.org/upload/images/amaxxf09j.jpg border=0 alt= />
amaxxf09 is offline   Send a private message to amaxxf09 Find more posts by amaxxf09 Add amaxxf09 to Your Friends list Reply With Quote top
Old 02-12-2012, 06:45 PM   #133
Quicksilver
my6thgen.org Profile Info.
 
RAZ76's Avatar
 
Join Date: Feb 2010
Official Member #: 138
Last Online: 04-30-2015 12:24 PM
Location: ANAHEIM/OKC
Posts: 7,612

Reputation Level: 50
RAZ76 is a jewel in the roughRAZ76 is a jewel in the roughRAZ76 is a jewel in the rough

Participation Level: 100%
Activity: 100% Activity: 100% Activity: 100%

My Awards:
Member of the Month (M.O.T.M)  


/ Point Value: 10

Banner of The Month  


/ Point Value: 10

Official Ride  


/ Point Value: 10

Default Re: Headers vs High Flow Precats

Originally Posted by amaxxf09 View Post
ok heres my question: are the precats the catalytic converter or what?
Yes they are and they dont last long, save your money and get headers.
__________________
Click the image to open in full size.
Likes: (1)
amaxxf09 (02-12-2012)
RAZ76 is offline   Send a private message to RAZ76 Find more posts by RAZ76 Add RAZ76 to Your Friends list Reply With Quote top
Old 02-12-2012, 07:40 PM   #134
Mile High Maxima
my6thgen.org Profile Info.
 
Apollos2's Avatar
 
Join Date: Aug 2010
Official Member #: 510
Last Online: 06-06-2016 08:24 PM
Posts: 1,955

Reputation Level: 34
Apollos2 has a spectacular aura aboutApollos2 has a spectacular aura aboutApollos2 has a spectacular aura about

Participation Level: 27%
Activity: 27% Activity: 27% Activity: 27%
Default Re: Headers vs High Flow Precats

Originally Posted by RAZ76 View Post


Yes they are and they dont last long, save your money and get headers.
I've seen a couple post about trouble with those, is that a pretty common thing with those now? The cat falling apart?

I tend to agree with you though, I haven't had much luck with the High Flow cat I had. I like the concept but I just haven't read enough about them either way.
__________________
Cardomain = Silver stream


Click the image to open in full size.Click the image to open in full size.
Apollos2 is offline   Send a private message to Apollos2 Find more posts by Apollos2 Add Apollos2 to Your Friends list Reply With Quote top
Old 02-12-2012, 07:43 PM   #135
Official Member
my6thgen.org Profile Info.
 
Maximusberg's Avatar
 
Join Date: Feb 2010
Official Member #: 71
Last Online: 10-22-2015 10:00 PM
Location: Cherry Hill, NJ
Posts: 420

Reputation Level: 10
Maximusberg is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%
Default Re: Headers vs High Flow Precats

ur better off getting ebay altima headers $198 then spending $500 plus on high flow pre cats.................. ull problee gain alittle more power too, but it will be a longer install
__________________
Maximusberg is offline   Send a private message to Maximusberg Find more posts by Maximusberg Add Maximusberg to Your Friends list Reply With Quote top
Old 02-12-2012, 07:51 PM   #136
Quicksilver
my6thgen.org Profile Info.
 
RAZ76's Avatar
 
Join Date: Feb 2010
Official Member #: 138
Last Online: 04-30-2015 12:24 PM
Location: ANAHEIM/OKC
Posts: 7,612

Reputation Level: 50
RAZ76 is a jewel in the roughRAZ76 is a jewel in the roughRAZ76 is a jewel in the rough

Participation Level: 100%
Activity: 100% Activity: 100% Activity: 100%

My Awards:
Member of the Month (M.O.T.M)  


/ Point Value: 10

Banner of The Month  


/ Point Value: 10

Official Ride  


/ Point Value: 10

Default Re: Headers vs High Flow Precats

Originally Posted by Apollos2 View Post
I've seen a couple post about trouble with those, is that a pretty common thing with those now? The cat falling apart?

I tend to agree with you though, I haven't had much luck with the High Flow cat I had. I like the concept but I just haven't read enough about them either way.
Im sure if Cattman made them, they would cost more but be better quality.
__________________
Click the image to open in full size.
RAZ76 is offline   Send a private message to RAZ76 Find more posts by RAZ76 Add RAZ76 to Your Friends list Reply With Quote top
Old 02-12-2012, 08:25 PM   #137
Senior Member
my6thgen.org Profile Info.
 
amaxxf09's Avatar
 
Join Date: Sep 2010
Official Member #: 860
Last Online: 04-20-2018 06:44 PM
Location: Bellflower, CA
Posts: 794

Reputation Level: 11
amaxxf09 is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%

My Awards:
Active Member  


/ Point Value: 5

Default Re: Headers vs High Flow Precats

with the headers what kind of hp gain am i looking at?? will my mpg be affected in a negative way?
__________________
<img src=http://my6thgen.org/upload/images/amaxxf09j.jpg border=0 alt= />
amaxxf09 is offline   Send a private message to amaxxf09 Find more posts by amaxxf09 Add amaxxf09 to Your Friends list Reply With Quote top
Old 02-12-2012, 08:53 PM   #138
Official Member
my6thgen.org Profile Info.
 
Maximusberg's Avatar
 
Join Date: Feb 2010
Official Member #: 71
Last Online: 10-22-2015 10:00 PM
Location: Cherry Hill, NJ
Posts: 420

Reputation Level: 10
Maximusberg is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%
Default Re: Headers vs High Flow Precats

headers + ypipe would net somwhere around 20-30whp
ebay headers + ypipe would net ya around 20-25whp
HFC + ypipe around 15whp-20whp

that would problee be close

but eveything really depends on other mods and conditions
__________________
Maximusberg is offline   Send a private message to Maximusberg Find more posts by Maximusberg Add Maximusberg to Your Friends list Reply With Quote top
Old 02-13-2012, 12:40 AM   #139
Senior Member
my6thgen.org Profile Info.
 
amaxxf09's Avatar
 
Join Date: Sep 2010
Official Member #: 860
Last Online: 04-20-2018 06:44 PM
Location: Bellflower, CA
Posts: 794

Reputation Level: 11
amaxxf09 is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%

My Awards:
Active Member  


/ Point Value: 5

Default Re: Headers vs High Flow Precats

Originally Posted by Maximusberg View Post
headers + ypipe would net somwhere around 20-30whp
ebay headers + ypipe would net ya around 20-25whp
HFC + ypipe around 15whp-20whp

that would problee be close

but eveything really depends on other mods and conditions
thanks alot great help...I live in cali and headers arent street legal so im kinda debating whether to get them or not?
__________________
<img src=http://my6thgen.org/upload/images/amaxxf09j.jpg border=0 alt= />
amaxxf09 is offline   Send a private message to amaxxf09 Find more posts by amaxxf09 Add amaxxf09 to Your Friends list Reply With Quote top
Old 02-13-2012, 03:36 PM   #140
Official Member
my6thgen.org Profile Info.
 
Maximusberg's Avatar
 
Join Date: Feb 2010
Official Member #: 71
Last Online: 10-22-2015 10:00 PM
Location: Cherry Hill, NJ
Posts: 420

Reputation Level: 10
Maximusberg is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%
Default Re: Headers vs High Flow Precats

headers arent legel in any state really....
__________________
Maximusberg is offline   Send a private message to Maximusberg Find more posts by Maximusberg Add Maximusberg to Your Friends list Reply With Quote top
Old 02-13-2012, 05:59 PM   #141
Premier Member
my6thgen.org Profile Info.
 
H4X1MA's Avatar
 
Join Date: Jun 2010
Official Member #: 265
Last Online: 10-20-2014 06:00 PM
Posts: 1,073

Reputation Level: 21
H4X1MA will become famous soon enough

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%
Default Re: Headers vs High Flow Precats

Originally Posted by amaxxf09 View Post
with the headers what kind of hp gain am i looking at?? will my mpg be affected in a negative way?
I am running Cattman Headers and Y-Pipe, Greddy SE cat back, Magiflow Resonator, Fujita CAI, and a Timing Advance. I average 14 MPG, and can't seem to get it above 22 MPG. I live in a "city" that has a lot of redlight stop and go, but no traffic. Before all the mod I would see 35 highway, 26ish city.

It really depends on how you drive it after the mod. Personally, which is bad on gas, I drive in manual mode so the exhaust makes that noise that gets you all warm and fuzzy inside. Chances are, if you love the sound of a nice setup, you will drive like this too. If you can stop yourself from driving like that; I have read that all of these mods will improve mileage. The only time I noticed a gain was with the timing advance.
__________________
Click the image to open in full size.
H4X1MA is offline   Send a private message to H4X1MA Find more posts by H4X1MA Add H4X1MA to Your Friends list Reply With Quote top
Old 03-14-2012, 12:44 AM   #142
Official Member
my6thgen.org Profile Info.
 
hero782's Avatar
 
Join Date: Jul 2010
Official Member #: 335
Last Online: 07-05-2018 03:34 PM
Location: Los Angeles
Posts: 1,834

Reputation Level: 23
hero782 will become famous soon enoughhero782 will become famous soon enough

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%

My Awards:
Spotlight Ride Of The Month  


/ Point Value: 5

Official Ride  


/ Point Value: 10

Default Re: Headers vs High Flow Precats

I installed my headers on Thursday, and hands down if you want performance headers are the way to go. Car feels like it has more torque than with the HFCs. As far as how it sounds headers are louder with a little rasp, too some people this might be annoying but I find it ok. Might get a larger resonator later on. I did get the SES with my headers but I don't mind it. My conclusion is if your going conservative and want a little performance HFCs are the way to go, but if your into performance headers FTW!!
hero782 is offline   Send a private message to hero782 Find more posts by hero782 Add hero782 to Your Friends list Reply With Quote top
Old 03-14-2012, 12:48 AM   #143
Quicksilver
my6thgen.org Profile Info.
 
RAZ76's Avatar
 
Join Date: Feb 2010
Official Member #: 138
Last Online: 04-30-2015 12:24 PM
Location: ANAHEIM/OKC
Posts: 7,612

Reputation Level: 50
RAZ76 is a jewel in the roughRAZ76 is a jewel in the roughRAZ76 is a jewel in the rough

Participation Level: 100%
Activity: 100% Activity: 100% Activity: 100%

My Awards:
Member of the Month (M.O.T.M)  


/ Point Value: 10

Banner of The Month  


/ Point Value: 10

Official Ride  


/ Point Value: 10

Default Re: Headers vs High Flow Precats

Its about time..
__________________
Click the image to open in full size.
RAZ76 is offline   Send a private message to RAZ76 Find more posts by RAZ76 Add RAZ76 to Your Friends list Reply With Quote top
Old 03-14-2012, 01:07 AM   #144
Official Member
my6thgen.org Profile Info.
 
timpol's Avatar
 
Join Date: Sep 2010
Official Member #: 584
Last Online: 11-29-2015 10:49 AM
Location: Phoenix, Arizona
Posts: 274

Reputation Level: 10
timpol is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%
Default Re: Headers vs High Flow Precats

Originally Posted by hero782 View Post
I installed my headers on Thursday, and hands down if you want performance headers are the way to go. Car feels like it has more torque than with the HFCs. As far as how it sounds headers are louder with a little rasp, too some people this might be annoying but I find it ok. Might get a larger resonator later on. I did get the SES with my headers but I don't mind it. My conclusion is if your going conservative and want a little performance HFCs are the way to go, but if your into performance headers FTW!!
Nice! You have the Catt headers right? I need to ditch my HFPC as they're breaking down after only a year.
timpol is offline   Send a private message to timpol Find more posts by timpol Add timpol to Your Friends list Reply With Quote top
Old 03-14-2012, 01:33 AM   #145
Official Member
my6thgen.org Profile Info.
 
hero782's Avatar
 
Join Date: Jul 2010
Official Member #: 335
Last Online: 07-05-2018 03:34 PM
Location: Los Angeles
Posts: 1,834

Reputation Level: 23
hero782 will become famous soon enoughhero782 will become famous soon enough

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%

My Awards:
Spotlight Ride Of The Month  


/ Point Value: 5

Official Ride  


/ Point Value: 10

Default Re: Headers vs High Flow Precats

Yea I have the cattman headers, only took me 3-4 months to install them lol. I actually have forgotten where I had stored them.
hero782 is offline   Send a private message to hero782 Find more posts by hero782 Add hero782 to Your Friends list Reply With Quote top
Old 05-13-2012, 06:46 PM   #146
Newbie
my6thgen.org Profile Info.
 
x_danny_x's Avatar
 
Join Date: May 2012
Official Member #: 5321
Last Online: 05-28-2012 08:13 PM
Posts: 1

Reputation Level: 0
x_danny_x is an unknown quantity at this point

Participation Level: 0%
Activity: 0% Activity: 0% Activity: 0%
Default Re: Headers vs High Flow Precats

Are the High Flow Cats still in danger in breaking unlike Headers or the one from RacingLine wont go down on you and last a good long time?

Last edited by x_danny_x; 05-13-2012 at 06:52 PM.
x_danny_x is offline   Send a private message to x_danny_x Find more posts by x_danny_x Add x_danny_x to Your Friends list Reply With Quote top
Reply

Tags
headers, high flow, performance, pre cats

Go Back   my6thgen.org - Maxima Forum > my6thgen.org - Very Useful Information > Ask Your Technical & General Questions > Intakes, Headers & Exhaust


Currently Active Users Viewing This Thread: 1 (0 Members And 1 Guests)
 
Thread Tools


All times are GMT -4. The time now is 08:32 AM.