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Old Oct 21, 2009 | 06:53 PM
  #1  
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From: Eglin AFB
Default ITB thoughts?

Alright guys so I've been looking around on the forums online and stuff and i can't find any real info on ITB's for our cars. I know they dont have much of a purpose on stock engine and yes I intend to build my engine (my rings are going out so while I have it apart im going to build it) and no this isnt my DD. I've seen it done before but not often. Any help, tech, links or opinion are greatly appreciated.
Old Oct 21, 2009 | 08:07 PM
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Default Re: ITB thoughts?

I know OBX makes a set of ITB's for h22's I think it would be good for track or the drag strip, prolly gunna need a good tune aswell.
Old Oct 21, 2009 | 10:16 PM
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Default Re: ITB thoughts?

yeah...i was gonna throw OBX ITBs on my lude, but decided not to cus it was going to be my daily driver, but if ur not gona daily drive ur, u should go for it mang, u'll get great throtle responce
Old Oct 22, 2009 | 04:37 AM
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From: Eglin AFB
Default Re: ITB thoughts?

Yeah but I've also heard bad things about OBX as a brand.

there seems to be a good lookin ITB and they seem to carry them for a lot of engines.
so maybe they good?
http://twminduction.com/ThrottleBody...leBody-FR.html

but i would like to make a track car and ive always head ITB's had really good throttle response but are a bitch to tune.

I'd like to hear something about this from the guys that have been in the game for a long time and actually SEEN this on a prelude.
Old Oct 22, 2009 | 04:58 AM
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Default Re: ITB thoughts?

I believe 98vtec did quite a bit of research and itb fabrication a few years ago. Might want to pm him or wait for him to chime in.
Old Oct 22, 2009 | 05:00 AM
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Default Re: ITB thoughts?

twm makes some good ITB's. i know the s2000 community uses them, along with the K crowd.
Old Oct 22, 2009 | 05:24 AM
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From: Eglin AFB
Default Re: ITB thoughts?

good deal. I'll definitely be using them then IF I decide to actually go the route over going boost.

I like the idea of ITB's because you dont see it a lot but Im not sure about the dependability or the actual gains you get from it.
Old Oct 22, 2009 | 09:35 AM
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Default Re: ITB thoughts?

you gain a lot of midrange power.
I went from skunk2 manifold to the TWM but i also built the motor and new cams too.
Old Oct 22, 2009 | 09:57 AM
  #9  
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From: Eglin AFB
Default Re: ITB thoughts?

98vtec was banned and edited over a lot of his write-ups.

and yeah im gonna rebuild it with oversized piston sor maybe a stroker kit and jun cams and stuff.?

iunno im just wanting to figure how it would work or howd be for power before i drop 2800 bucks on it.
Old Oct 22, 2009 | 05:24 PM
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Default Re: ITB thoughts?

depends i am in a predicament at the moment.

i am along the following thought processes.

1) i have a cam that is optimized for midrange so an IM like skunk / euro give me more top end.

2) choose a cam built for top end, and then get ITB's to beef up the midrange.

i guess it depends on what you want to use the car for.
Old Oct 22, 2009 | 05:51 PM
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Default Re: ITB thoughts?

http://jhpusa.com/store/pc/viewPrd.a...idproduct=3726

just ran across those today...just looking around. i've heard that itb's sound wicked. no personal experience.
Old Oct 22, 2009 | 06:56 PM
  #12  
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Default Re: ITB thoughts?

i did get some twm but they would not fit without modifying the ABS unit, and if you want the CF cover for them it definately won't fit with ABS.

Thats also part of the problem
Old Oct 22, 2009 | 07:18 PM
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Default Re: ITB thoughts?

ITBs, nitrous set up, havent seen or heard of that
Old Oct 23, 2009 | 07:10 AM
  #14  
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From: Eglin AFB
Default Re: ITB thoughts?

Yeah well on the issue with taking out my ABS thats something i was planning on doing anyway.

I mean I've already relocated the fuse box, relocated the battery, took out C/C and all of the A/C. P/S and ABS are next on the list.


And of course Im going to want the CF one haha.

But if I run ITB's I might spray it but i doubt it because ill have to run direct port into the head right?

But I'm just wondering what kind of number would I be looking at with ITB's and forged pistons, more aggressive cams, cams gears, H beam rods, crankshaft,bored over, head work, ETC.

and then if im not satisfied with that maybe some spray?
Old Oct 23, 2009 | 07:21 AM
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Default Re: ITB thoughts?

If your not doing a turbo car, you should defiantly throw some spray into your build. You dont have to use it everyday, its cool to have an extra 200 HP on tap.
Old Oct 23, 2009 | 08:14 AM
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Default Re: ITB thoughts?

Originally Posted by Acidcrakker
If your not doing a turbo car, you should defiantly throw some spray into your build. You dont have to use it everyday, its cool to have an extra 200 HP on tap.
200 Hp on tap i dunno about that a stock h22 can only handle a 75 shot.
Old Oct 23, 2009 | 08:27 AM
  #17  
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From: Eglin AFB
Default Re: ITB thoughts?

Well if I do run this set up im not leaving the block stock buy any means.

I was looking at boreing it over to 89mm and running bulletproof sleeves with a stroker kit.

think that could handle the nitrous? haha
Old Oct 23, 2009 | 08:41 AM
  #18  
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Default Re: ITB thoughts?

Yah if your doing that your fine. mine as well boost it then
Old Oct 23, 2009 | 10:29 AM
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Default Re: ITB thoughts?

Originally Posted by bigblockh22
200 Hp on tap i dunno about that a stock h22 can only handle a 75 shot.
I wasnt talking about a stock motor. I dunno what the OP is running, but, if I was going to put ITB's on a H22 it would be a fully built motor. Personal preference. Im running a stock h22 at the moment as well, but nitrous is going to play into effect with this build.

Jim
Old Oct 23, 2009 | 11:19 AM
  #20  
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Default Re: ITB thoughts?

Originally Posted by bigblockh22
200 Hp on tap i dunno about that a stock h22 can only handle a 75 shot.
LOL.........people have done 125s since the 90s.
I used over 100lbs with a 100shot

Why are you so anxious to post bad info?

ITBs are all about throttle response......Nat from BTP just installed them with a 2whp gain[peak]
Old Oct 25, 2009 | 05:42 PM
  #21  
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From: Eglin AFB
Default Re: ITB thoughts?

2 whp? peak?

you cant be serious.

was he built?

with what research I've done, you don't gain much on a stock block but you have a pretty good gain on a fully built engine.
Old Oct 25, 2009 | 07:09 PM
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Default Re: ITB thoughts?

Natalie, yes, she has a built setup. You need to do much more research into the subject if you plan on doing it. There is alot of info out there not directly related to H motors that will benefit you.
Old Oct 25, 2009 | 08:43 PM
  #23  
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Default Re: ITB thoughts?

Originally Posted by NirVTEC
LOL.........people have done 125s since the 90s.
I used over 100lbs with a 100shot

Why are you so anxious to post bad info?

ITBs are all about throttle response......Nat from BTP just installed them with a 2whp gain[peak]
Im not posting bad info your a hypocrite 1st you say a h22 cant handle 8psi safely but yet they can take 125 shot.I wud never do that to a stock h22 good bye to h22 mazx 75 shot safely.
Old Oct 25, 2009 | 08:54 PM
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Default Re: ITB thoughts?

Originally Posted by bigblockh22
Im not posting bad info your a hypocrite 1st you say a h22 cant handle 8psi safely but yet they can take 125 shot.I wud never do that to a stock h22 good bye to h22 mazx 75 shot safely.
He knows what he is talking about.

Doesnt mean that you have to listen to what he says either.

Save the pissing contests for something better
Old Oct 25, 2009 | 10:48 PM
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Default Re: ITB thoughts?

Originally Posted by NirVTEC
LOL.........people have done 125s since the 90s.
I used over 100lbs with a 100shot

Why are you so anxious to post bad info?

ITBs are all about throttle response......Nat from BTP just installed them with a 2whp gain[peak]
That one little spike at the top of your power curve is all that matters in a motor, so this is an informative and valid post.

On a more serious note, ITBs like everything can be tuned, longer runners for peak power or shorter for mid-range, switching up fuel injector locations etc. Two things are pretty much certain with ITBs: Your throttle response will improve and you'll have one more tool for maximizing your area under the curve.



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