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Individual Throttle Bodies

Discussion in 'Engine Building' started by K2e2vin, Apr 18, 2003.

  1. K2e2vin

    K2e2vin Senior Member

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    I was looking at the throttles on some skylines and some of them have been converted from individual to a big single in front of the manifold. then looking at the hondas i see them taking out the single TB and replacing them with individual TBs. what are the advantages of individual throttle bodies and are they worth it?
     
  2. B16

    B16 Super Moderator VIP

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    depends on your other mods, you would need high compression and radical cams... only when you do all that would they be really worth it
     
  3. asmallsol

    asmallsol Super Moderator

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    ITB's are for engines that are modded to hell. They are so unstreetable, make you get like 5mpg and if your in cali, good luck getting that smoged. They are for people that only drive on road course and thats it. They are badass but impartical and extremly expensive.
     
  4. K2e2vin

    K2e2vin Senior Member

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    so ITBs are only good for all-motor apps with no air filter? i ask that b/c i want to know if using ITB on FI app would be better than a singe TB. i am comparing it to the skyline, b/c its a turbo engine but many people convert it from ITB to single. IMO the extra throttle plates is an obstruction in the path of air, is this right?
     
  5. pills_PMD

    pills_PMD Super Moderator

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    itb's only work with na applications i thought??
     
  6. K2e2vin

    K2e2vin Senior Member

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    well for hondas right now thats the only thing out. but some other cars (turbo) use ITBs; skyline, bugatti eb110, and some others. but its possible to convert one of the toda ITBs to run turbo by removing the intake trumpet and fuel injection port and using a adaptor to hook up a manifold.
     
  7. pissedoffsol

    pissedoffsol RETIRED

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    you are looking at about 4 grand for an ITB setup.

    IMO, you can make more power than you can use on a honda with a turbo system, and a block to hold it. so why spend 4g's on something that is impossible to tune, a bitch to setup, and won't gain you any power to the ground
     
  8. AllMotorMonster

    AllMotorMonster Senior Member

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    Shall we clear some things up first?

    1- ITB's are streetable with, dare I say it? TUNING Yes kids, HP gains are very LARGE, but tuning is key. This is not a mod for those of you that want gas mileage.

    2- ITB's are used for Turbo/SC(not jackson) and NA engines. Again, it's all in the TUNING

    3- ITB's start at about $1700, and can go as high as $2700

    Hayward ITB's

    TWM Induction
     
  9. liquid00meth

    liquid00meth Senior Member

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    if you have every driven with an ITB in a small engine, apparently the car revs like a motorcycle.
     
  10. K2e2vin

    K2e2vin Senior Member

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    ok thanks. I am not worried about mileage b/c its going to be in a track car. right now im just trying to get ideas for the car (integra gsr turbo)
     
  11. ITB are very agressive, you need a good ass ECU, preferrably hondata. The only manufacturer that makes ITB for hondas is TODA, the only one i know. you can't even have a good idle.
     
  12. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    there are several companies that make ITBs for hondas
    im pretty sure hondata wont work for them... you need an actual stand alone system
    you can get as good of an idle as you want..... theres plenty of cars that come with them stock... its all about how well you tune them

    they are not a mod for beginners
     
  13. B16

    B16 Super Moderator VIP

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    at that point you would probably consider running a stand alone engine managment system, tecIII, motec...
     
  14. liquid00meth

    liquid00meth Senior Member

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    at that point you would probably want to remove your head from your ass, after you realize you paid 1700 for a massive headache
     
  15. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    by the time you get ITBs you should already have a fully built engine compleatly maxed out and now your looking for that last item to get the absolute max HP out of your setup
    at this point you will have at least 10-15k into your engine so who gives a fuck about another 2k (youve spent too much to start getting cheap now)

    ITBs go hand in hand with a stand alone management system... they allow you to tune each cyl for max output....

    this is not a bolt on mod
    this is not for beginners
    this is for experienced tuners with fully built engines
     
  16. AllMotorMonster

    AllMotorMonster Senior Member

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    Apparantly, you didn't see my post above.

    TODA doesn't even make them. They were made by TWM for TODA.

    Yes, you can have a good idle.
     
  17. last time i checked with nguyenie from All Shot Motorsports, (he has EG6 B18C5 Fully Buillt) his shit was not idling well at all, even with the best tuning ever, so i thought that the ITB's must be the problem.
     
  18. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    what kind of cam is he running????
    if its all kinds of stupidly agressive than that is more than likely the cause of the poor idle
     
  19. no2psi

    no2psi Senior Member

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    I guess it all depends on what you call good idle. I was able to get the car to idle around 1300 rpm's. That is idling on cams with more than 12mm of lift. But that is with a standalone computer. I have done ITB's on factory ECU's but you have to have some sort of vacumn canister, for the MAP sensor. Take a look at the motor in the for sale section.
    It has ITB's. B). Hint hint. Some one should buy it.
     
  20. JDMilan

    JDMilan Senior Member

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    ITB's will make sure that all of our FOUR cylinders will get a equal amount of air. If you notice how our original oem intake manifolds sit, the TB is on the left which means cyclinder 4 is getting more air than cylinder 1, (I believe that the combustion sequence is from left to right 4-2-3-1)

    I have never used ITB's and personally I really wouldn't plan on using them. A buddy of mine purchased TWM ITB's and was having tuning problems up the yin yang. I believe it's a love hate relationship, and they do a while to tune out using a dyno of course.

    The way I see it, the fastest NA honda in the world doesn't use em, why should I.



    Milan
     
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