FI Tech "Go EFI 4" Self Tuning Throttle Body Injection Install Thread

Discussion in 'High Tech for Old Iron' started by real82it, Nov 2, 2015.

  1. sriley531

    sriley531 More Luck than Skill....

    Great update! I had the exact same reaction on my first drive with the Fitech, "whoa!"
  2. goof

    goof Well-Known Member

    I love this thread :) With all the messages I may have missed your update on fuel mileage. Any improvements over carb? What mpg are you getting?
  3. real82it

    real82it Silver Level contributor

    I improved 2 mpg in city (from 7 to 9 mpg) and 3 mpg on highway (from 11 to 14 mpg). The highway mpg improvement is what surprised me. My prev Q Jet was tuned to the engine. Cruise AF had measured fine around 14:7:1. But, I am not complaining! Nice to spend a little less on gas!
    300sbb_overkill and sriley531 like this.
  4. Yanchik

    Yanchik Well-Known Member

    What are the specs on your wheels/tires?
  5. sailbrd

    sailbrd Well-Known Member

    I told Denny Manner with my overdrive and FI I should get better gas millage. He was very kind and did not laugh at me. At 70 mph I see about 21 to 22 lph. That works out to 11 mpg.
  6. Ken Warner

    Ken Warner Stand-up Philosopher

    Best MPG I ever saw with Q-Jet or Holley or FAST EZ-EFI 1.0 (and TH400) was 11-12 MPG going to/from Somerset KY cruise in. That trip is right at 200 miles each way with about 175 of that being 70+mph highway. With the FiTech and TH2004R and locking converter I saw a solid 15 each way last year. I don't see it ever being any better than 15 MPG....
    sriley531 likes this.
  7. sailbrd

    sailbrd Well-Known Member

    I keep thinking on the new motor that maybe I want a cam that would give just a little bit of millage. But then how would I get 800 HP?
  8. 300sbb_overkill

    300sbb_overkill Well-Known Member

    Trade some duration @ .050" for more lift and stuff in more boost.
  9. sailbrd

    sailbrd Well-Known Member

    More boost is always the answer. :D
    300sbb_overkill likes this.

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