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Muffler where you dont loose back pressure?

Discussion in '1st Gen. Tacomas (1995-2004)' started by wolfgang123, Oct 27, 2010.

  1. Oct 27, 2010 at 9:55 AM
    #1
    wolfgang123

    wolfgang123 [OP] Well-Known Member

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    Skyler
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    So guys i have a 2.7l taco with a flow 40 on it with a tailpipe and im not happy surprise!! After the o2 sensor i went to 2.5inch pipe then i welded in the muffler like 36-42 inches from the sensor (basically where the stock muffler went) and then i have a shorter than stock but still a tail pipe. Its not any louder or "better" sounding than stock really. I am looking for something much louder and deeper. I also lost a lot of backpressure i am assuming causing me too loose ALOT of bottom end. So i am looking for a way to have sexy sound and more bottom end. i know there are alot of muffler threads out there but i feel like they are all related to sound. I would like to keep the 2.5inch piping for sound purpose but i am willing to dump it after the axle.

    SO BOTTOM END AND DEEP LOUD SOUND...GO!!!

    haha i was thinking about the magna flow but i need to know if i should get the tube styl of the oval style and shoulod i get a lounger or short muffler for that bottom end?

    Thanks guys
    WOLFGANG
     
  2. Oct 27, 2010 at 9:22 PM
    #2
    Digiratus

    Digiratus Adventurer

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    Not sure what you expected to happen when you made all these changes but these engines need enough back pressure to be able to make low rpm torque or bottom as you call it.

    Instead, the changes uou have made have reduced back pressure by enlarging the pipe from the cat back. You've further reduced back pressure by going to an aftermarket muffler like the flowmaster 40. And you are now surprised that your 4 banger has lost bottom end? The very bottom it gets from all the back pressure you've taken away. :facepalm:

    To regain some of that lost back pressure you could put the stock muffler back in. Or reinstalling the stock diameter pipe from the cat to the flowmaster might help too.

    Have you done anything to help the engine breath better? Deck plate mod?
     
  3. Oct 27, 2010 at 9:26 PM
    #3
    kcbmx

    kcbmx doing my thing.

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    Dynomax superturbo ftw.
     
  4. Oct 27, 2010 at 9:35 PM
    #4
    memario1214

    memario1214 Vivid Illumination Vendor

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    Okay... You're not going to get nice smooth deep sound out of your 2.7, just not going to happen. But you can in fact make it sound aftermarket and not ricey. I have done a lot of exhaust homework on the v6 but I am not quite as familiar with the sound profile of your engine. Your low end isn't gonna be very good with a 4 cyl regardless, but opening up the piping is definitely not going to help your cause, as the engine barely gas enough compression in the exhaust to force the air out as is. I am going to take a guess and say that your best bets for mufflers are going to be the dynomax superturbo or the wicked flows muffler...
     
  5. Oct 28, 2010 at 8:46 AM
    #5
    wolfgang123

    wolfgang123 [OP] Well-Known Member

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    yes i will probably go back to 2.25 inch stock piping and i will probably just dump it after the axle for the next round but i still need some ideas. i have heard good things about the magnaflow and wicked flow, the super turbo is a little rice for me. but what about muffler size and shape? do those affect sound or performance?
     
  6. Oct 28, 2010 at 8:47 AM
    #6
    wolfgang123

    wolfgang123 [OP] Well-Known Member

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    and yes i do have the deckplate mod
     
  7. Oct 28, 2010 at 10:24 AM
    #7
    memario1214

    memario1214 Vivid Illumination Vendor

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    Outside shape of a muffler really doesn't affect anything. Most of the straight thru design mufflers have the same performance and sound aspects. Internals make the difference, flowmaster is chambered is why it blows for our trucks... Also, I don't know what you expect for the axle dump. You will get more clearance true, but the sound will resonate underneath the truck for sure and make all crazy kinds of sound in cab.
     
  8. Oct 28, 2010 at 10:26 AM
    #8
    Space Wrangler

    Space Wrangler Well-Known Member

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    you can forget making that 2.7 sound "good". ...go back to stock and leave that other crap for the ricers.
     
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