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itbs on the cheap

Discussion in 'Engine Building' started by SlushboxTeggy, Dec 31, 2004.

  1. SlushboxTeggy

    SlushboxTeggy It's only stupid if it doesn't work VIP

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    just finished reading an article in honda tuning. they build some itbs on the cheap with a set of suzuki gsxr tbs and some custom fab. i added it up and it should cost between 400 and 500. and it added about 20hp to a 6th gen ex before a real tuning with hondata or uberdata. but what do you guys think.
     
  2. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Sure- as long as you can tune it. There are tons of people all over Honda-Tech making their own ITBs. Just make sure you don't go too big on the TB size.
     
  3. 99SiRidinLow

    99SiRidinLow Senior Member

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    use CBR throttle bodies... That way you dont' have to mess with the TPS... Also I think it should cost you more in the 200-300 range. You can get cbr throttle bodies for like 100-150 bux and you can buy the flanges for like 60 bucks on honda tech...
     
  4. rsaeini

    rsaeini Senior Member

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    i picked up a set of CBR954 itb's for $100.
    i also picked up a set of velocity stacks for $40
    and the extra manifold set me back $80

    so far that's $220...i figure it'll cost me about another $100-200 to get it running.

    by mid-march i will tell you if it was worth it or not.

    and incase you're wondering why i got it, it's because i'm going to be tracking my car and i figured it would be an inexpensive experiment/modification. i don't think anyone has put a homemade itb setup up to the test at the track(road racing, not drag).
     
  5. K2e2vin

    K2e2vin Senior Member

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    $500?

    i thought id be arount $100 for what im going for. i just need a TPS right now. i got gsxr1000 itb's for $62 from a guy on gixxer forum. im going to be using couplers(cut the intake mani) instead of a "full fab" system.
     
  6. formby

    formby learning in progress

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    i am bidding on a set of gsxr600...are those too small
     
  7. civicious

    civicious FüK-VTEC VIP

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    For a B series? Yup.
     
  8. formby

    formby learning in progress

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    thanks....again
     
  9. pissedoffsol

    pissedoffsol RETIRED

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    they dont impress me.

    tbone picked up like 3 hp up top and 5-ish in the midrange, but lost a shit load of low end.

    for all the cost, time, and crap drivability they give, i would say don't bother.

    mind you, this is on a 240whp 2.1L b-series.
     
  10. rsaeini

    rsaeini Senior Member

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    pissed, was that directed at me?

    i'm looking for the throttle response it provides, i haven't even considered the horsepower it may/may not give me.
    remember this is not going on my daily driver, i would never put a hack job mod like that on my S. it's going on my project/track car.
     
  11. rsaeini

    rsaeini Senior Member

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    also, who are you talking about?
    i would love to read up on their experience with it.
     
  12. pissedoffsol

    pissedoffsol RETIRED

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    wasn't directed at anyone :p just a general statement.

    my buddy tom went from a full skunk2 stage 3, buddy club 3's, m24's, and moved on to the itb's...

    http://www.honda-tech.com/zerothread?id=1001405

    dyno graph on page 2

    blue line = pre itb

    red/green after


    and he pretty much gave up after that. never really fully tuned it.. is thinking about going turbo now :p
     
  13. rsaeini

    rsaeini Senior Member

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    i remember reading that post before. he was using the jenvey setup. i think i even pm'ed him about the setup.

    wow!
    the difference is seen between 6800-8500 rpms.
     
  14. pissedoffsol

    pissedoffsol RETIRED

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    jusy getting them to run right isn't worth it to me.

    you NEED a standalone.

    you have to FIND a place for vacuum- all your brakes, fpr, and so forth

    tuning them is beyond a bitch

    hello and welcome to 10mpg
     
  15. formby

    formby learning in progress

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    alright sounds like a pain in the ass......
     
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