07-06-2008, 04:13 PM
|
#1
|
GLS member
Join Date: Dec 2006
Location: Montreal, Qc, Canada
Posts: 1,876
|
HF cat and Muffler
I'm on my way to complete my exhaust set up and I was wondering which brand of Cat and muffler to buy. I'm gonna probly try a dynomax turbo muffler but for the High flow cat, I just dont know.
I dont want to get one with ceramic because I want it to last for a while.
I'd like to go 2.5 inch piping or even maybe 2.75 or 3 since I'm boosted now.
So what are your opinions on this?
__________________
2 door 2000 Black GX With a stick: M45 eaton supercharger - Quad4's 57mm Throttle body - Custom WAI - KYB GR-2 struts - CM Lowering springs - Front and rear strut tower brace - R1 concept zinc plated drilled/slotted rotors with semi-metallic pads - short shifter.
Quote:
Originally Posted by Alerosaint
the #6 bolt torque..its impossible to get...unless I use telekenesis
|
Last edited by Vinalero : 07-06-2008 at 05:56 PM.
|
|
|
07-06-2008, 04:18 PM
|
#2
|
GL Member
Join Date: Jun 2008
Location: Fairfax, VA
Posts: 182
|
magnaflows always a good choice for a high flow muffler, and ive always ready 3 inch exhaust is good for boost, but im by no means an ld9 expert
|
|
|
07-06-2008, 07:59 PM
|
#3
|
GLS member
Join Date: Sep 2007
Location: PA
Posts: 1,791
|
I have a 2.5 down pipe (3.4 no turbo) and a SS magna flow high flow cat and 2.5 pacesetter kit works well love the extra ummpph and the sound.
__________________
build it to break it, if it breaks it was not built well enuff !
= OFF ALL NARCOTICS ADDICTION FREE PAIN MANAGEMENT FTMFW ."million of years ago the continents were connected...." THATS FUNNY THE EARTH IS ONLY ABOUT 6000 YEARS OLD AND THEY STILL ARE CONNECTED JACK*@# !!! click here www.chronicpainanonymous.org
|
|
|
07-07-2008, 07:42 AM
|
#4
|
Gone but not forgotten
Join Date: May 2008
Location: Lancaster, CA
Posts: 1,254
|
I have a magna high flow cat and a vibrant str8t thru muffler sitting in my room...... all 2.5"
If you decide to go 2.5" the cat model number is 53006
Got it from here http://www.hottexhaust.com/
__________________
00' Alero Coupe - Baby is wearing: Custom CAI, Pacesetter headers, custom 2.5" exhaust, 62mm TB, MP45 s/c, B&M ShiftPlus, 6500K HID, KYB-GR2, Eibach springs, R1 Concepts drilled/slotted rotors
Last edited by Alerosaint : 07-07-2008 at 07:45 AM.
|
|
|
07-07-2008, 11:04 PM
|
#5
|
Boost Guru
Join Date: Mar 2004
Location: Buffalo, NY
Posts: 1,837
|
Quote:
Originally Posted by Vinalero
I'm on my way to complete my exhaust set up and I was wondering which brand of Cat and muffler to buy. I'm gonna probly try a dynomax turbo muffler but for the High flow cat, I just dont know.
I dont want to get one with ceramic because I want it to last for a while.
I'd like to go 2.5 inch piping or even maybe 2.75 or 3 since I'm boosted now.
So what are your opinions on this?
|
Some people will tell you a 3" exhaust is too big even with a supercharger. Since the supercharger provides instant boost, exhaust scavenging at low rpms becomes much less important. With that said, a 3" exhaust will gain a little more power over the 2.5" piping, but it will be pretty loud, especially since there's no turbo in the exhaust stream to help keep it quiet.
I'd stick with 2.5" piping with a Magnaflow metallic high flow cat (part no. 59956), long resonator and large straight through muffler, like something from Magnaflow or Vibrant.
__________________
|
|
|
07-07-2008, 11:17 PM
|
#6
|
Gone but not forgotten
Join Date: May 2008
Location: Lancaster, CA
Posts: 1,254
|
Quote:
Originally Posted by Spilner521
Some people will tell you a 3" exhaust is too big even with a supercharger. Since the supercharger provides instant boost, exhaust scavenging at low rpms becomes much less important. With that said, a 3" exhaust will gain a little more power over the 2.5" piping, but it will be pretty loud, especially since there's no turbo in the exhaust stream to help keep it quiet.
I'd stick with 2.5" piping with a Magnaflow metallic high flow cat (part no. 59956), long resonator and large straight through muffler, like something from Magnaflow or Vibrant.
|
a"lot of my research came off of some of your posts...but im going 2.5....do you think its gonna yield good performance gains compared to 2.75" or 3"
...I already ordered the parts....what you think???...Im s/c up
__________________
00' Alero Coupe - Baby is wearing: Custom CAI, Pacesetter headers, custom 2.5" exhaust, 62mm TB, MP45 s/c, B&M ShiftPlus, 6500K HID, KYB-GR2, Eibach springs, R1 Concepts drilled/slotted rotors
|
|
|
07-07-2008, 11:25 PM
|
#7
|
Boost Guru
Join Date: Mar 2004
Location: Buffalo, NY
Posts: 1,837
|
Yes you'll still make good power with a free flowing 2.5" exhaust and it'll be quieter than a 3" system.
__________________
|
|
|
07-07-2008, 11:30 PM
|
#8
|
Gone but not forgotten
Join Date: May 2008
Location: Lancaster, CA
Posts: 1,254
|
ok cause i got my cat, muffler and reso...just waiting for my header which is taking forever to come from coating....but i didnt want to get a dud exhaust system
__________________
00' Alero Coupe - Baby is wearing: Custom CAI, Pacesetter headers, custom 2.5" exhaust, 62mm TB, MP45 s/c, B&M ShiftPlus, 6500K HID, KYB-GR2, Eibach springs, R1 Concepts drilled/slotted rotors
|
|
|
07-07-2008, 11:45 PM
|
#9
|
Boost Guru
Join Date: Mar 2004
Location: Buffalo, NY
Posts: 1,837
|
You'll be just fine, especially adding a header to a full, free flowing exhaust.
__________________
|
|
|
07-07-2008, 11:56 PM
|
#10
|
Gone but not forgotten
Join Date: May 2008
Location: Lancaster, CA
Posts: 1,254
|
cool...good re assurance coming from a turbo nut
__________________
00' Alero Coupe - Baby is wearing: Custom CAI, Pacesetter headers, custom 2.5" exhaust, 62mm TB, MP45 s/c, B&M ShiftPlus, 6500K HID, KYB-GR2, Eibach springs, R1 Concepts drilled/slotted rotors
|
|
|
07-08-2008, 09:38 PM
|
#11
|
GLS member
Join Date: Dec 2006
Location: Montreal, Qc, Canada
Posts: 1,876
|
__________________
2 door 2000 Black GX With a stick: M45 eaton supercharger - Quad4's 57mm Throttle body - Custom WAI - KYB GR-2 struts - CM Lowering springs - Front and rear strut tower brace - R1 concept zinc plated drilled/slotted rotors with semi-metallic pads - short shifter.
Quote:
Originally Posted by Alerosaint
the #6 bolt torque..its impossible to get...unless I use telekenesis
|
|
|
|
07-08-2008, 10:54 PM
|
#12
|
Gone but not forgotten
Join Date: May 2008
Location: Lancaster, CA
Posts: 1,254
|
I wonder whats the diff between the 2.5 " ID 300 cell density Metallic Substrate Universal Catalytic Converter and the regular 2.5" cat??? Anybody???
__________________
00' Alero Coupe - Baby is wearing: Custom CAI, Pacesetter headers, custom 2.5" exhaust, 62mm TB, MP45 s/c, B&M ShiftPlus, 6500K HID, KYB-GR2, Eibach springs, R1 Concepts drilled/slotted rotors
|
|
|
07-09-2008, 03:30 AM
|
#13
|
GL Member
Join Date: Jan 2007
Location: las vegas
Posts: 578
|
My 3inch is very quiet.
__________________
CARDOMAIN W/ DRAG VID & LIST OF MODS
Trevtec Motorsports built & driven - LV,NV
Revolution Lounge @ the Mirage
Promoter - PM me to be put on the list. Ladies first drink free wed, thur, sat
|
|
|
07-09-2008, 08:52 PM
|
#14
|
Boost Guru
Join Date: Mar 2004
Location: Buffalo, NY
Posts: 1,837
|
Quote:
Originally Posted by Vinalero
|
Yep that's it.
Quote:
Originally Posted by Alerosaint
I wonder whats the diff between the 2.5 " ID 300 cell density Metallic Substrate Universal Catalytic Converter and the regular 2.5" cat??? Anybody???
|
The regular Magnaflow cat is ceramic. You just mentioned you didn't want a ceramic core cat so I gave you the part number for the metallic core cat. The metallic core will handle super high exhaust temps better and may flow a little better, but I've been happy with my regular 3" ceramic Magnaflow cat.
I am swapping to a 3" metallic Magnaflow cat for my Eco engine, but then again, I'm aiming for quite a bit more power and flow than I have now.
Quote:
Originally Posted by spyhunter
My 3inch is very quiet.
|
So is mine, but we have a turbine in the exhaust path that helps keep the noise down.
__________________
|
|
|
07-09-2008, 09:39 PM
|
#15
|
Gone but not forgotten
Join Date: May 2008
Location: Lancaster, CA
Posts: 1,254
|
I got the regular ceramic one.... vinalero is the one who didnt want ceramic...but I did talk to the magnaflow cat tech and he told me the same thing you said that it flow better than the ceramic one...and he recommended that for the force inducted over the reg ceramic...ill try to see if a can get a swap or just purchase it and sell the ceramic on here
__________________
00' Alero Coupe - Baby is wearing: Custom CAI, Pacesetter headers, custom 2.5" exhaust, 62mm TB, MP45 s/c, B&M ShiftPlus, 6500K HID, KYB-GR2, Eibach springs, R1 Concepts drilled/slotted rotors
|
|
|
07-10-2008, 03:52 AM
|
#16
|
GLS member
Join Date: Dec 2006
Location: Montreal, Qc, Canada
Posts: 1,876
|
appreciated guys, thx
__________________
2 door 2000 Black GX With a stick: M45 eaton supercharger - Quad4's 57mm Throttle body - Custom WAI - KYB GR-2 struts - CM Lowering springs - Front and rear strut tower brace - R1 concept zinc plated drilled/slotted rotors with semi-metallic pads - short shifter.
Quote:
Originally Posted by Alerosaint
the #6 bolt torque..its impossible to get...unless I use telekenesis
|
|
|
|
07-10-2008, 06:37 PM
|
#17
|
GL Member
Join Date: Jan 2007
Location: las vegas
Posts: 578
|
what's the purpose of a cat?
__________________
CARDOMAIN W/ DRAG VID & LIST OF MODS
Trevtec Motorsports built & driven - LV,NV
Revolution Lounge @ the Mirage
Promoter - PM me to be put on the list. Ladies first drink free wed, thur, sat
|
|
|
07-10-2008, 06:54 PM
|
#18
|
GLS member
Join Date: Aug 2006
Location: Grand Forks, ND for school; Langdon, ND home
Posts: 2,632
|
^because u only gain about .5 hp taking it off, so y be illegal? or if you are being serious, it takes a bunch of bad exhaust crap and basically turns it to harmless stuff like water
for a 4cyl, i'd have to say go with the 2.5. i'd think 3 would sound a bit shitty and wouldn't make a big hp difference with just a supercharger. now if you had a turb i'd go with the 3".
__________________
2001½ F150 XLT Crew Cab- true dual glasspacks with x-pipe, AEM intake, SCT X3 with VMP custom tunes, full stereo system, HID 55w heads and 35w fogs, 35% tint front and 20% rear, Lightning tail lights
04 F6 Sno Pro Team edition- MBRP race can, ODS clutch kit
01 YZ125- bored out to 144, PnP cylinder and head, Pro Circuit WORKS suspension, many other mods
Last edited by jayson_waltz : 07-11-2008 at 12:55 AM.
|
|
|
07-10-2008, 07:15 PM
|
#19
|
Boost Guru
Join Date: Mar 2004
Location: Buffalo, NY
Posts: 1,837
|
Quote:
Originally Posted by Alerosaint
I got the regular ceramic one.... vinalero is the one who didnt want ceramic...but I did talk to the magnaflow cat tech and he told me the same thing you said that it flow better than the ceramic one...and he recommended that for the force inducted over the reg ceramic...ill try to see if a can get a swap or just purchase it and sell the ceramic on here
|
Eh, I knew it was one of you, I was just putting the part number out there for anyone You'll be fine with the ceramic core cat, but it's up to you if you want to swap, every little bit of flow helps. Like I said, I've had it on my car since day 1 with boost and I've been very happy with it.
Quote:
Originally Posted by spyhunter
what's the purpose of a cat?
|
I'm not a big fan of cats actually. I'm a dog guy myself. I have two
__________________
|
|
|
07-12-2008, 08:47 PM
|
#20
|
GL Member
Join Date: Jan 2007
Location: las vegas
Posts: 578
|
Quote:
Originally Posted by jayson_waltz
^because u only gain about .5 hp taking it off, so y be illegal? or if you are being serious, it takes a bunch of bad exhaust crap and basically turns it to harmless stuff like water
for a 4cyl, i'd have to say go with the 2.5. i'd think 3 would sound a bit shitty and wouldn't make a big hp difference with just a supercharger. now if you had a turb i'd go with the 3".
|
I gained more then .5 taking my cat off.
Actually my exhaust setup is probably the straightest of anybody with an n-body.
Log manifold, turbo (side note: wastegate dumps into the atmosphere instead of being recirculated back into the exhaust, teehee.), 2.5 downpipe into flexpipe, into 3inches into Apex'i N1 can, which is closer to 3.25inch.
Sounds awesome.
__________________
CARDOMAIN W/ DRAG VID & LIST OF MODS
Trevtec Motorsports built & driven - LV,NV
Revolution Lounge @ the Mirage
Promoter - PM me to be put on the list. Ladies first drink free wed, thur, sat
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -4. The time now is 09:58 PM.
|