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Enough Already! Your Truck's T, HP and RPM Explained

Discussion in '3rd Gen. Tacomas (2016+)' started by hiPSI, Oct 24, 2018.

  1. Mar 4, 2019 at 7:09 AM
    #381
    24-7

    24-7 Well-Known Member

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    In my 3.5 6mt, when you get the revs up it goes. Not a racecar but not slow.
     
    MOC221_ likes this.
  2. Mar 4, 2019 at 7:54 AM
    #382
    Frank_Zuccarini

    Frank_Zuccarini Obscure Member

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    Chicagoland
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    I'm not calling YOU out either, and I love my 1.05 93 tune, but isn't it unreasonable to flash a new tune and then immediately put the truck on a dyno? Aren't all the learned values correct for the previous tune, not allowing the new tune to take full advantage of changes in AFR, Timing, etc.? If Mat had put the requisite 300 miles on the TSB 04B04 tune before testing, the gains would likely have been even greater, no? Or, even if you cleared all learned values before running the TSB tune (which it probably does on its own?), timing and fueling would likely be very conservative until the ECU 'learned' what it could get away with.

    Am I missing something obvious?

    Frank
     
    MOC221_ likes this.
  3. Mar 4, 2019 at 8:24 AM
    #383
    MOC221_

    MOC221_ 3rd Gen GinGer StepchilD

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    OVT 1.05 FOB 91
    Nope, and your questions are valid. We who are tuned all know that a file settles in over a few hundred miles. If we want to split hairs, it would've been more of a "fair" test to reset learned values (techstream) on the factory 04B03 calibration, let it idle for 5 minutes, then do your dyno pulls when up to temp. Then flash to 04B04 and follow the same procedure. Mat could've done that, although he didn't say so. These were both Toyota files BTW, I didn't say anything about 1.05.
     
    Last edited: Mar 4, 2019
  4. Mar 4, 2019 at 8:30 AM
    #384
    MOC221_

    MOC221_ 3rd Gen GinGer StepchilD

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    OVT 1.05 FOB 91
    There is an updated file for your truck from Toyota (Cal ID 04B13). My truck is an early production 3rd gen M/T, manufactured 09/15. 04B13 is miles ahead of the original factory calibration she came with IMO (04B10).
     
    Last edited: Mar 4, 2019
    shakerhood likes this.
  5. Mar 4, 2019 at 2:53 PM
    #385
    909digger

    909digger New Member

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    I've farted in the seat.
    The issue is drag (wind resistance). This 3 5 motor is great in a Camry. But the drag on the truck is twice that of the car. While driving 70 the motor is turning about 2000r's. The motor doesn't make enough torque to overcome the drag at that rpm range. If they tightened up 5th and 6th gear getting the rpm into the 2500 range then maybe it wouldn't shift to 4th anytime you start up an overpass. And it would probably be more efficient 40%throttle at 2000rpm uses more gas than 20% at 2500rpm.
     
  6. Mar 4, 2019 at 2:59 PM
    #386
    IRISHFAN

    IRISHFAN Well-Known Member

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    SE Pennsylvania, Elverson
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    When you have the MT all that down shifting with any slight grade or breeze you encounter doesn’t happen.
     
    Mrtacoman88 and SilverBulletII like this.
  7. Mar 4, 2019 at 5:31 PM
    #387
    shakerhood

    shakerhood Well-Known Member

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    Thanks for posting that up, my dealer said they would do the updated TSB tune, just need to take it in one of these days.
     
    MOC221_ likes this.

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