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Thread: rear cat delete???

  1. #16
    Join Date
    May 2011
    Location
    St. Louis
    Posts
    68
    DTR Mercury Marauder Rear-cat Delete: https://youtu.be/by7LyT2f92Y

    Mercury Marauder SLP loudmouths: https://youtu.be/9zU-lVjE8iM

    The first one is with flow masters and second with slp. Both have rear cats cut out. And very ture. The day I heard my car drivd away when I sold it I cried a bit haha

  2. #17
    Join Date
    Jul 2014
    Location
    Canada
    Age
    51
    Posts
    152
    jmarino.....so the rear cat delete is just that? No tip change. Just the rear cat delete? Was there any drone at highway speeds? No lack of power?
    I removed the resinators I had on my Impala SS and put 2 1/2 tips from axle back with 45 degree dumps and it slowed my car down as well the drone was horrible.
    I love the sound you shown in the video. The loudmouths is not my personal taste.
    Feedback please and thank you for posting the video
    Not all disabilites are visible

  3. #18
    Join Date
    Nov 2014
    Location
    Farmington
    Posts
    68
    Update got rid of the turbo mufflers and had flowmaster 40s put on and its way better. Deaper growl and not to loud on hwy. Better flow as well .

  4. #19
    Join Date
    May 2011
    Location
    St. Louis
    Posts
    68
    Yes just mufflers and cats. No power loss, atleast that I could tell. I think if anything it helped open up the flow. And no drone. Before tune i had drone with flows but after changing shift points and losing cats minimal drone. And with slp absolutely no drone! And yes slp are LOUD and raspy

  5. #20
    Join Date
    Feb 2009
    Location
    Upstate NY
    Posts
    4,373
    This test was performed by 5.0 Mustang & Super Fords Magazine, December 2002, on a '90 Mustang LX coupe with 370hp and 11 second potential:

    The results in HP order:
    -----------------------
    1.Flowtech Warlock (open) 374.2 hp / 333.1 tq
    2.Bassani Real Street 373.7 hp / 333.8 tq
    3.Hooker Maxflow 373.5 hp / 333.0 tq
    4.Borla XS 373.3 hp / 332.6 tq
    5.Magnaflow 372.8 hp / 332.5 tq
    6.MAC 372.3 hp / 331.5 tq
    7.Flowtech Afterburner 372.3 hp / 330.1 tq
    8.Hooker Aerochamber 372.1 hp / 330.4 tq
    9.Bassani 372.0 hp / 333.5 tq
    10.Spintech 371.6 hp / 332.2 tq
    11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
    12.Borla XR1 370.0 hp / 334.0 tq
    13.Flowtech Terminator 369.5 hp / 331.3 tq
    14.Dynomax Ultra Flo 369.4 hp / 333.2 tq
    15.Flowmaster 369.4 hp / 331.8 tq
    16.Flowtech Warlock 366.3 hp / 325.3 tq

    17.No muffler 365.2 hp / 330.1 tq


    Sound Off in Quietest to Loudest (Decibels):
    ------------------------------------
    For reference, a 14 dB increase doubles the sound level, while 60 dBs represent normal conversation and 90 dBs are considered the threshold for pain.

    1. Borla XS 80db at idle, 90db at 2,000 rpm, 110db at WOT.
    2. Hooker Maxflow 80db at idle, 90db at 2,000 rpm, 120db at WOT.
    3. Magnaflow 82db at idle, 91db at 2,000 rpm, 114db at WOT.
    4. Flowmaster 82db at idle, 93db at 2,000 rpm, 115db at WOT.
    5. Flowtech Warlock 83db at idle, 92db at 2,000 rpm, 112db at WOT.
    6. Dynomax UltraFlo 83db at idle, 94db at 2,000 rpm, 113db at WOT.
    7. Borla XR1 83db at idle, 96db at 2,000 rpm, 118db at WOT.
    8. Bassani Street 83db at idle, 96db at 2,000 rpm, 120db at WOT.
    9. Edelbrock RPM 84db at idle, 93db at 2,000 rpm, 118db at WOT.
    10. Bassani Real Street 84db at idle, 96db at 2,000 rpm, 120db at WOT
    11. FlowtechAfterburner 86db at idle, 94db at 2,000 rpm, 115db at WOT.
    12. FlowtechTerminator 86db at idle, 94db at 2,000 rpm, 119db at WOT.
    13. Hooker Aerochamber 87db at idle, 94db at 2,000 rpm, 114db at WOT.
    14. SpinTech 87db at idle, 97db at 2,000 rpm, 116db at WOT.

    15. No Muffler 91db at idle, 103db at 2,000 rpm, 120+db. __________________
    2021 F150 XLT Super Crew short bed - no chrome! - 3.5 Ecoboost 400hp/500tq - 36 Gal tank (600 miles) - 4x4 FX4 Offroad + Max Tow - 3.55 Locker - 10 Speed - Pro Power 2kva - 24mpg @ 80 Ford is still the best.
    03 300A - Number 1727
    - Super Touring - 10k in the best upgrades - 13.8@99 N/A - SOLD
    - STAP was so much fun, loved meeting you all and racing.



  6. #21
    Join Date
    Aug 2014
    Location
    Bowling Green, KY
    Posts
    560
    Rear cat delete, Pype Bomb M80s on my 03 :


    03 Marauder 300a
    392 hp / 406 tq

  7. #22
    Join Date
    Jul 2014
    Location
    Canada
    Age
    51
    Posts
    152
    thanks for the posts....videos are great because everyone likes to hear a specific sound to their own preference. Kudos everyone
    Not all disabilites are visible

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