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exhaust systems

Discussion in 'Performance and Tuning' started by samouhosvince, Apr 7, 2010.

  1. Apr 7, 2010 at 4:37 AM
    #1
    samouhosvince

    samouhosvince [OP] Member

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    VINCE
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    hey i have a 2010 4.0 tacoma im looking to get a different exhaust system. I dont want anything too loud, what do you reccomend?
     
  2. Apr 7, 2010 at 4:43 AM
    #2
    Jap

    Jap Loving this

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    TRD supercharger, extractors, 7 psi pulley, Interceptor ECU
    You want performance or sound?

    If you're after mainly the latter, then just try getting your stock muffler swapped for a hi flow item.

    I put a 2.5" offset/offset hi flow muffler in my Hilux (same engine as yours) and it sounds pretty damn good.
     
  3. Apr 7, 2010 at 5:17 AM
    #3
    Brunes

    Brunes abides. Staff Member

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    Inside: Tint, Wet Okole 1/2 Piped Red/Black Covers, Black Weathertech Digital Fit Mats, URD Short Throw w/ TWM Weighted Knob, USA Spec iPod adapter. Outside: 4300K Retro w/ Angel Eyes and Red Shrouds, 5000K Blazer Fog Light Retrofit, Debadge, Bed Locking Handle, Satin Black Rims Performance: TRD/Steigmeier Blower w/ 2.7 Pulley. 668 Injectors and 320 LPH AEM Fuel pump. URD UCON and 7th Injector. DTLT Headers, URD Y-Pipe, Wicked Flow Muffler. Suspension: Both: OME Shocks Front: 886X's and TC UCAs Rear: Dakars Armor: Relentless Front Bumper Relentless High Clearance Rear w/ Tire/Rotopax Swing Out Relentless Front, Mid, and TCase skids BAMF Diff Skid Recovery and Spares: Fullsize Spare Tire 2x2 gal Rotopax 1x1 gal Rotopax 1x1 gal Water Rotopax Warn 9.5XP-S Winch Hi-Lift Extreme 60" Ironman Off-Road Recovery Kit Upcoming: ATO Gas Tank Skid and Sliders w/ kickout. ATO Shackle Flip Kit. Down the line: Front/Rear ARB Lockers w/ OBA. 4.56 Gears
    Your goals/plans will determine what you need to get.

    If you are going to get a supercharger- Then you need to do that and then build exhaust to match what you want.
    If you are going to stay naturally aspirated: Get an upgraded muffler welded into the stock pipe system.
    For better performance: Dynomax Super Turbo
    For better sound: Flowmasters
     
  4. Apr 9, 2010 at 5:06 PM
    #4
    samouhosvince

    samouhosvince [OP] Member

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    im looking for a good sound but mainly gas mileage and hp increaes.
     
  5. Apr 9, 2010 at 5:15 PM
    #5
    Tacofanatic05'

    Tacofanatic05' #1 Member

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    16'' American Racing wheels, 285/75/16 Cooper Discoverer St tires, Bilstein 5100 w/eibach coils, K&N Cold Air Intake, Flowmaster Super 44, 1 in 2 out exhaust. Tractor Supply Tool Box, No Mud Flaps, Mossy Oak Seat Covers, Oakley Decals, Hoyt Decal, Window tint 20% on sides 5% on top front windshield, Uniden Cb, and Window Deflectors.
    to tell ya the truth there isn't much increase in gas milage or hp! Well at least I haven't noticed
     
  6. Apr 9, 2010 at 5:19 PM
    #6
    stenyeart

    stenyeart Well-Known Member

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    Smaller motors need back pressure, if you open them up you decrease the back pressure. This causes you to actually lose hp and gas mileage. With a V-6, I would just put on a hi flow muffler (I like flowmaster because of the sound) and leave everything else stock. Cat back systems for our trucks are a huge waste of money. New muffler and new tip, for looks, and be done with it. It will sound good.
     
  7. Apr 9, 2010 at 5:36 PM
    #7
    XrunnIT

    XrunnIT Well-Known Member

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    2-stroke motors "need" back pressure. 4-stroke needs efficient scavenging, in which back pressure only plays a small role.
     
  8. Apr 9, 2010 at 10:47 PM
    #8
    stenyeart

    stenyeart Well-Known Member

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    Put a 5" exhaust on a 4 cyl and then come talk to me.
     
  9. Apr 9, 2010 at 11:25 PM
    #9
    XrunnIT

    XrunnIT Well-Known Member

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    :laugh:

    ok...

    So tell me.. is it because of little backpressure or is it because the large volume of the piping has cooled the gas, which in turns slows down the exhaust velocity to the point that the exhaust scavenging pulse is no longer doing its job?

    What about a straight pipe 2" exhaust on that 4 cyl? it will have 0 back pressure. Will that still lose power? Why? ;)
     
  10. Apr 10, 2010 at 12:02 AM
    #10
    ktmrider

    ktmrider Senior Member

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    Im digging my URD exhaust-----



    Its in my garage
     
  11. Apr 10, 2010 at 12:09 AM
    #11
    only_K

    only_K 1st Gen. Pride

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    K&N drop in filter, Magnaflow Exhaust, Billet grille. All 4 Bilstien 5100s. Fronts set at 2.5". Rear 2" AAL.
    Magnaflow is what you want. Nice mellow tone. Not too loud, and not too quiet. When you floor it it will sound even better.
     
  12. Apr 10, 2010 at 12:54 AM
    #12
    stenyeart

    stenyeart Well-Known Member

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    Just taking the muffler out does not give you zero back pressure.
     
  13. Apr 25, 2010 at 7:01 PM
    #13
    huff.jeremy

    huff.jeremy Well-Known Member

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    Bigger is not always better when it comes to exhaust. Depending upon the variables of the engine components, more back-pressure/restriction may be needed to achieve optimum exhaust velocity.

    In High performance situations, bigger exhaust usually is better because even though larger in diameter, the exhaust maintains enough velocity. But, in smaller & less powerful motors, you need to find the right balance between free -systems and restrictive systems in order to maintain optimum velocity in the RPM band that you make power in (lower RPMS usually).
     
  14. Apr 25, 2010 at 7:05 PM
    #14
    Brunes

    Brunes abides. Staff Member

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    But putting a Flowmaster muffler into your rig makes TONS of backpressure. Flowmaster is a "high flow" muffler with tons of baffling to make the great sound.
    Dyno sheets have been posted in the past to prove a LOSS of HP/TQ with Flowcrapsters. If sound is your thing- Go for it. But don't try to lecture about performance if you are backing Flowmaster,
     
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