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3" exhaust

Discussion in 'Performance and Tuning' started by grizzbear, Oct 11, 2012.

  1. Oct 11, 2012 at 7:45 PM
    #1
    grizzbear

    grizzbear [OP] Well-Known Member

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    got a sweet deal on a 3" exhaust cat back system what are the pros and cons of a 3" system on our trucks/
     
  2. Oct 11, 2012 at 7:51 PM
    #2
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Banks Monster Exhaust, Pop n Lock tailgate lock, Hook-Ups tie down brackets, USA Spec Ipod adaptor, WO seat covers, color matched grill with Grillcraft insert, Tuffy locking bed box
    Probably some loss on low end. It would flow really well with boost or at the top of the RPM range.
     
  3. Oct 11, 2012 at 7:53 PM
    #3
    grizzbear

    grizzbear [OP] Well-Known Member

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    what about back pressure?
     
  4. Oct 11, 2012 at 7:54 PM
    #4
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Banks Monster Exhaust, Pop n Lock tailgate lock, Hook-Ups tie down brackets, USA Spec Ipod adaptor, WO seat covers, color matched grill with Grillcraft insert, Tuffy locking bed box
    There is no backpressure in an exhaust. That would reduce power.
     
  5. Oct 11, 2012 at 7:55 PM
    #5
    grizzbear

    grizzbear [OP] Well-Known Member

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    so just a little loss in low end power
     
  6. Oct 12, 2012 at 10:50 AM
    #6
    Speed Freek

    Speed Freek Turbo Meister

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    Vista, Ca, Lake Havasu, Az.
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    98' 2.4 extra cab w/LS1 Aluminum V8
    ARP Head Studs, Ported Head, MLS Head Gasket, GT3076R Garrett BB Turbo, Synapse Tubular SS Exhaust Manifold, PSI Forward Facing Sheet Metal Intake, Intercooler, 550cc injectors,255lph Fuel Pump, Speed-Trac Traction bars, Heim joint Strut bars, URD Short Shifter, CC Twindisk Clutch, , Haltech Platinum Sport 1000 Standalone ECU, Pre-runner rear springs, V6 rearend with TRD limited-slip Differential New list....LS1 with T56 6-speed trans...simply awesome.
    Big exhaust will cause loss of SCAVENGING not backpressure as most people are led to believe.

    You will lose some low end power, you might pick up a tiny bit on top. Not really good on a daily driver unless you rev the shit out of it.
     
  7. Oct 12, 2012 at 10:53 AM
    #7
    BAMFTACO

    BAMFTACO Pabst Blue Ribbon on ice

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    I have the urd 3 in catback and its not that much loss in low end.
     
  8. Oct 12, 2012 at 11:27 AM
    #8
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Banks Monster Exhaust, Pop n Lock tailgate lock, Hook-Ups tie down brackets, USA Spec Ipod adaptor, WO seat covers, color matched grill with Grillcraft insert, Tuffy locking bed box
    Dyno proof?:D
     
  9. Jan 2, 2013 at 3:20 PM
    #9
    hotrod45

    hotrod45 Well-Known Member

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    which cat back did you buy? how does it sound and any drone? what was the special price and from who?
     
  10. Jan 2, 2013 at 4:09 PM
    #10
    skytower

    skytower Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    There is a point where a larger size hurts instead of helps. Hot air flows faster, and with a larger pipe, it won't stay hot down the legnth of exhaust. Cooler exhaust=less scavenging(vaccum pulled on one cylinder, caused by previous exhaust pulse)

    Our engines are tuned for a stock exhaust and intake.
     
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