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MPG on a 4.0 w/ TRD SC

Discussion in '2nd Gen. Tacomas (2005-2015)' started by harrytasker, Jun 7, 2008.

  1. Jun 7, 2008 at 8:44 AM
    #1
    harrytasker

    harrytasker [OP] Member

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    Can anyone here with a 4.0 and a SC tell me what your fuel economy is with civil driving? Did it go up or down?
     
  2. Jun 7, 2008 at 9:18 AM
    #2
    raycie

    raycie Well-Known Member

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    Excuse my lack of initialism... what is SC?
     
  3. Jun 7, 2008 at 9:19 AM
    #3
    ChrisDeSoup

    ChrisDeSoup Come on, Touch it......

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  4. Jun 7, 2008 at 9:23 AM
    #4
    ChrisDeSoup

    ChrisDeSoup Come on, Touch it......

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    My DC got 18.1 with a tank of conservative driving....

    I was driving 75 to 90 on the freeway and hard braking and burning out of stops but now I'm keeping my freeway speed down to 70 to 80 and easing into and out of stops.... also note my taco has 1800 miles so normal brake-in could also be a factor.
     
  5. Jun 7, 2008 at 9:23 AM
    #5
    raycie

    raycie Well-Known Member

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    on crap.. duh.. that's what happens when you start surfing the net at 6:00 in the morning half asleep.. I thought he was asking about a mod..

    harry.. what are you comparing it to? civil driving as compared to street racing? civil vs. ?? up or down???
     
  6. Jun 7, 2008 at 9:28 AM
    #6
    JimBeam

    JimBeam BECAUSE INTERNETS!! Moderator

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    are yall sure he's not talking about a supercharger instead of a single cab?
     
  7. Jun 7, 2008 at 9:31 AM
    #7
    ChrisDeSoup

    ChrisDeSoup Come on, Touch it......

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    ohhhhhh, okay well if thats the case I can't help ya there

    could also mean Super Chicken;)
     
  8. Jun 7, 2008 at 9:37 AM
    #8
    ForeRunner

    ForeRunner Scotch before noon. Moderator

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    I do believe he is talking about the TRD Supercharger and not at TRD Single cab.
     
  9. Jun 7, 2008 at 9:48 AM
    #9
    ChrisDeSoup

    ChrisDeSoup Come on, Touch it......

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    Yea, I realize that now.... I was going to delete my post but I decided that sometimes it's okay to look foolish. :D
     
  10. Jun 7, 2008 at 10:04 PM
    #10
    harrytasker

    harrytasker [OP] Member

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    Sorry I am talking about the 4.0 and a Super Charger.

    And By Civil driving I mean obeying all post speed limits and keping the rpms under 4k.

    I am wondering if the boost helps or hinders the mpg wwhen not at wide open throttle.
     
  11. Jun 7, 2008 at 10:11 PM
    #11
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    ANytime the SC is makeing boost, it will be useing more fuel. The SC TRD uses (as do most newer super chargers) a by pass that allows it to run like stock under vaccume and get similar mpg. If you drive without getting into the boost, you will get near stock mpg. Once you get into the boost, all bets are off. :)
     
  12. Jun 7, 2008 at 10:12 PM
    #12
    CNW

    CNW Well-Known Member

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    How about 17-19 mpg. My driving is mostly city.

    Craig
     
  13. Jun 7, 2008 at 10:17 PM
    #13
    harrytasker

    harrytasker [OP] Member

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    Do you know what you were getting before it?
     
  14. Jun 8, 2008 at 3:56 AM
    #14
    danusa

    danusa Well-Known Member

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    I decided aganst the S/C until the fuel situation is more predictible.
    Bone stock TRD 4 X 4 Access cab Off Road gave me 24+ in mixed driving to the EAA in Oshkosh. I did recheck the math. And I did use the auto`s gears.
    I will check it again after changing the boxes to M1.
    I have an MRI at Madison V A that will be perfect for that.
     
  15. Jun 8, 2008 at 7:39 AM
    #15
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    On the 05+ Tacomas, the fueling system has not been an issue. On boost wih the TRD SC on the 4.0 engine, the AFR's are around 12.0 to 12.3. Actually running a little rich. The auto tranny has no issue with the SC as it has been used behind the 4.7 V8 in the 4Runner for quite some time now. :)
     
  16. Jun 8, 2008 at 8:51 AM
    #16
    4x4x4trd

    4x4x4trd My other ride weighs 200 tons

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    I think Dan was refering to Premium fuel prices not problems with the SC install.
     
  17. Jun 8, 2008 at 10:55 AM
    #17
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Ah. Thank you! I see statements like that and I turn into "engine guy", while missing the intended point. :eek:
     
  18. Jun 8, 2008 at 5:32 PM
    #18
    danusa

    danusa Well-Known Member

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    That is not what TRD and my dealer said.
    They are turning down about $5,000 bucks. Who would you belive?
    Damn the price. I was refering to availibility.
     
  19. Jun 8, 2008 at 5:37 PM
    #19
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Said about what? The AFR? :confused:
     
  20. Jun 8, 2008 at 5:51 PM
    #20
    danusa

    danusa Well-Known Member

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    Said about the headers, and TRD S/C and breathing system.
     
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