Page 1 of 2 12 LastLast
Results 1 to 20 of 28

Magnaflow vs. SLP catback opinions

This is a discussion on Magnaflow vs. SLP catback opinions within the External Engine forums, part of the LSx Technical Help Section category; I am new to the forums here and have been debating between the dual/dual magnaflow catback part number 16723 or ...

  1. #1
    Junior Member
    Join Date
    Jun 2011
    Location
    Texas
    Posts
    1

    Magnaflow vs. SLP catback opinions

    I am new to the forums here and have been debating between the dual/dual magnaflow catback part number 16723 or the SLP LM1 catback.

    Basically I am wanting a deep rumble sound, but also fairly loud (I like to be noticed hehe).

    Would the magnaflow meet the 'loudish' requirement? I have heard it isnt loud at all and that it is loud. But so far its looks with the molded bumper is amazing.

    Opinions are definitely wanted because I am going to try to get a catback soon after I decide.

    Thanks

  2. #2
    Spaz is My Mentor SMWS6TA's Avatar
    Join Date
    Feb 2009
    Location
    Ugy Lower Corner of AL
    Posts
    10,509

    Navy Blue Metallic
    98 T/A w/a little mods...

    This is mine, Pacesetters LT with TS&P ORY, and Razor muffler. I have a Magnaflow on now because the headers blew out the baffles after this video but it sounds just as mean.

    You can hear the baffles starting to go (the rasping sound)

    View Video on FQuick



    Just giving you some options, this setup plus the Magnaflow cost me about $550

  3. #3
    Member
    Join Date
    Aug 2005
    Location
    Staten Island, NY
    Posts
    258

    2007 Cadillac Escalade
    98 Camaro SS, 09 G8 GT

    I have both. On my 2000 which is a DD, I still have the stock manifolds and y pipe along with the magnaflow catback. To me, it's perfect for a DD. It has a nice deep tone but it isn't loud. I have the LM1 on my 98. When I had the stock manifolds and y pipe it sounded great but was more loud than deep and had some drone at highway speed. After I added longtubes and catted y it got really loud but lost some of the drone. I then cut out the resonator and added a magnaflow bullet and that cured all of my drone and gave it a nice sound. To sum it up, loud = LM1 and deep mellow = Magnaflow. Adding headers and y will change the sound of both.

  4. #4
    I have Loudmouth 1, with PS long tubes and high flow cats. There isnt any rasp, just alittle drone. Its no where near as bad as people make it out to be. I actually think its very quiet at idle and driving around. WOT is pretty loud but isnt that the point?

    LM1 gets my vote.

  5. #5
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    I will never suggest an SLP catback. I had to remove the loudmouth from my car once I had a cam and longtubes. Sounded like shit.

    I will never use anything but Magnaflow anymore.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

  6. #6
    Member AKA Speedy's Avatar
    Join Date
    Oct 2009
    Location
    Elizabethtown, KY
    Posts
    375

    Spice Red Metallic
    2006 Pontiac GTO

    Thumbs up

    Quote Originally Posted by Mr. Luos View Post
    I will never suggest an SLP catback. I had to remove the loudmouth from my car once I had a cam and longtubes. Sounded like shit.

    I will never use anything but Magnaflow anymore.
    Absolutely agree!!!! I've had Borla (Custom set up/not CAT back), Dynomax, Flowmaster, GMMG Clones, Straight pipes (against my will... for a day), and now Magnaflow for about 6 months now. The Best set up ever! wouldn't use anything else!!!!!!!!!!!!!!!!!!!!

  7. #7
    Senior Member wileyCoyote's Avatar
    Join Date
    Oct 2005
    Location
    Centerville OH
    Posts
    1,591

    blue
    1999 TransAm

    i have magnaflow on mine. nice deep sound, not obnoxiously loud, ...no highway "drone" problem.. plus magnaflow uses quality 100% stainless steel, lifetime warranty.

  8. #8
    Just me Y2KPewterSS's Avatar
    Join Date
    Nov 2006
    Location
    Broken Arrow, OK
    Age
    42
    Posts
    23,353

    Pewter metallic
    2000 Camaro SS

    SLP catbacks and SLP parts

  9. #9
    Quote Originally Posted by Y2KPewterSS View Post
    SLP catbacks and SLP parts
    I dont know I kinda like my slp lid I got for $89.

  10. #10
    Spaz is My Mentor SMWS6TA's Avatar
    Join Date
    Feb 2009
    Location
    Ugy Lower Corner of AL
    Posts
    10,509

    Navy Blue Metallic
    98 T/A w/a little mods...

    their lids and line locks are good, but everything else see Y2KPewterSS for my response.

  11. #11
    Quote Originally Posted by SMWS6TA View Post
    their lids and line locks are good, but everything else see Y2KPewterSS for my response.
    Theres nothing wrong with the cat back its light and flows great. I wouldnt buy a cam from them though

  12. #12
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Magnaflow P/N 16723:





    'nuff said.

  13. #13
    Member WS6Dream's Avatar
    Join Date
    Dec 2010
    Location
    Oklahoma
    Posts
    187
    2000 WS6 Trans Am

    Quote Originally Posted by pajeff02 View Post
    Magnaflow P/N 16723:


    Click for full size


    'nuff said.
    That looks convincing to me lol ^

  14. #14
    Junior Member
    Join Date
    Mar 2006
    Location
    CLASSIFIED
    Posts
    58

    NBM Z28
    2002

    SLP Loudmouth 1 is very bad ass sounding. It sounds great if you dont have longtubes, and a ory. Once you do, it is very loud, and raspy. I have had LM1, Flowmaster, Dynomouth, Magnaflow and now TSP true duals. Honestly true duals is the way to go. Magnaflow is too quiet. If not TSP Duals, i would highly go with Hooker catback over magnaflow.

  15. #15
    Member blackbird0230's Avatar
    Join Date
    Jul 2009
    Location
    Colorado
    Posts
    828

    Black
    2002 Trans am WS6 pkg


    Magnaflow part #16723.... Tips, lol
    Got magnaflow bullet mufflers through a true dual system. Perfect to me. The catback was quiet and I liked it but this to me is 100x better

  16. #16
    Auto Painter RyanJM's Avatar
    Join Date
    Dec 2007
    Location
    Houston, TX
    Age
    41
    Posts
    2,002

    White
    1998 Trans Am

    I run the SLP Power Flo catback and love the sound. Though a LM2 would be better if you want louder. Mine keeps my car deep and loud enough at WOT but can still talk on the phone if I need to. Just tried this cause I got a deal off a company I oreder parts though when it 1st came out and can't say I would ever trade it for a magnaflow or anything except maybe a GMMG.
    1998 Trans Am 85k miles.
    Bolt ons, MS3 113LSA cam, Circle D Stall, Tune, Modified WS6 style hood, Full Suspension, 6000k HID's, Clear Side Markers w/ Leds, Led 3rd Brake Light and 18" AR Staggered Killer Wheels w/ BFG KDW NT's.- Weekend Toy/DD
    02 Trailblazer -Sold
    09 Ram 1500 CC - Sold
    09 Cobalt SS/TC - Sold
    13 ram 1500 LoneStar CC 4x4 - Magnaflow, K&N,and more to come-DD/Toy

  17. #17
    I love how people think loudmouth is so loud. Summer nationals was this weekend and some of the cars there were 50 times louder than mine

  18. #18
    Chief of his tribe! LSCyaL8R's Avatar
    Join Date
    Mar 2008
    Location
    NYC
    Posts
    1,460

    Navy Blue Metallic
    2000 T/A Firehawk M6

    I am going through the same dilemma right now. Not sure which route to take. My hawk is stock but the muffler is going. It's the original chambered SLP muffler that came from the factory on the hawk. Louder than a stock bird but not LM loud by any means. I actually LOVE the sound of the stock hawk exhaust but I don't think there is any way to get another muffler exactly like the original SLP system. My pipes seem to be rotting a bit too hence my desire for a full cat back.

    I seemed to remember slowass having a magnaflow but i can't remember which kit you had curtis. I know pajeff has a magnaflow and cats and his car is so quiet at idle that you can't hear it. lol. leaves me in a tricky spot. I want something that's more or less just as loud as what i have now. though i'm sure the big magnaflow would be almost perfect if i went with no cats but i plan on keeping the car somewhat emissions legal.

  19. #19
    Smiles for 9.5 Years cammed goat's Avatar
    Join Date
    Jan 2009
    Location
    Paterson/Ridgewood, NJ
    Posts
    11,474

    Phantom Black Metallic
    2004 GTO M6

    My old Beretta GTZ had a Magnaflow stainless cat and muffler connected via a custom 2-1/2" cat back pipe and resonator. Deep, low idle and a nice low growl at 4k rpm.

    If you were to go with headers AND the Magnaflow, your car will sound like this...


  20. #20
    Chief of his tribe! LSCyaL8R's Avatar
    Join Date
    Mar 2008
    Location
    NYC
    Posts
    1,460

    Navy Blue Metallic
    2000 T/A Firehawk M6

    but is that with or without cats? from the sound i'd say that's catless. pajeffs car sounds so smooth and mellow... almost like a foreign car V8.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Question: TSP LT's/ Magnaflow catback
    By blackbird0230 in forum External Engine
    Replies: 9
    Last Post: 03-09-2010, 12:11 PM
  2. magnaflow catback
    By LT1 > LS1 in forum Parts Review
    Replies: 34
    Last Post: 11-03-2008, 01:10 PM
  3. getting new magnaflow catback
    By jd1666 in forum External Engine
    Replies: 9
    Last Post: 08-01-2008, 08:22 AM
  4. Magnaflow catback for LS1
    By rel3rd in forum Parts For Sale / Trade
    Replies: 4
    Last Post: 09-22-2007, 10:32 AM
  5. NEW magnaflow catback
    By 1meantransam in forum Parts For Sale / Trade
    Replies: 3
    Last Post: 09-17-2007, 05:53 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •