Sorry for the newbie question but i was just curious.

I just want to know what's the real pourpose with ITB how do they work? do they make good power?. I just need some info thanks

 

you know a naturally aspirated engine works off of sucking air into the engine right?

well the air has to go through a filter, intake, intake manifold and then into the engine

ITB's just suck air directly into the engine without any of that. they make awesome power but i would NEVER street drive them.

 

thanks for the info.

they are not good for street use or what??

 

They don't have air filters.

 

you can put filters on ITBs, it's just that most people don't.. and unless you make a filter yourself with some K&Ns or something, the filters you do buy aren't going to filter very well, just the big stuff.

 

Supposedly, they are very hard to tune, just what I have herd tho.

Blaze

 

Why would you want to run without any sort of filter? Wouldn't things get sucked in? Also what TB's would you use anyway, like a motorcycle set-up or something?

 

well, small TBs, yes. Some have made thier own ITB setups with motorcycle throttle bodies. Hayabusa, or CBR 954RRs work

 

I.T.B's aren't as "unstreetable" as people are lead to believe. My friend(who's car is pictured below) and i participate in debates on h-t.com all the time with people who seem to think that mods that are called "race" by the vendors and "not recommended for street use" are bad on a daily driven car. Evilxkid's car below is his daily driven 88 hatchback that is just as reliable as any other swapped car out there. The motor is now a stock block b20/vtec(with around 9.5:1 compression ratio, which is another debate about the cams and conpression mixing) with a b16 head w/ skunk2 springs and retainers and drumroll........... stage 3 cams. yes, daily driven w/ stage 3 cams and it runs fine, slightly lumpy idle but that could be due to either the cams or throttle bodies. He's running the TWM throttle bodies w/ filters from europe on them. He used to have a b16 block and would frequently rev it to 10k(making power the whole way) but now keeps it to around 8000 till he gets the pistons and rods in there. Dyno Tuning would be nice but he's got it pretty dialed in with the butt dyno. here's the pics. (by the way, he's got a pretty paintjob to go with it now!!

 

Also...Correct me if im wrong...Dont ITB require a custom engine harness, which from what I here cost $$$$$$

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blaze45 &raquo;</TD></TR><TR><TD CLASS="quote">Supposedly, they are very hard to tune, just what I have herd tho.

Blaze</TD></TR></TABLE>

i've heard that too

 

do special engine harness is required, just a few modifications to the map sensor and IAT and stuff. my friend has converted his car to read off of the speedo and tps sensor for all the fueling information rather than the map sensor.

They are no harder to tune then a turbo kit. Think about it, all you are changing is the amount and velocity of the air, which is what a turbo kit does as well. IT's just that there are alot more people w/ turbo tuning experience.

 

anyone want to post the exact modifications needed to run ITB's as far as engine harness, injectors, and methods to control the injectors??

 

Theres kits that you can buy that come with everything you need. Toda racing makes a nice kit for 2400. I dont see why you cant drive em on the street. Look at the M3 and M5. ITB's stock. Only difference is that theyre in a plastic box so you cant see 'em. What i was thinking is, if someone could make that for Hondas, ITB's would be alot more streetable. Just a big plastic cover with a large air inlet hole, and you can throw a filter on there to clean out the dirt. It wouldnt be as loud and it would be filtered.

 

ya, i heard they are mad hard to tune too...ive wanted some for the longest tiem and peopel are always, dude you know how mucht uning those take? its like...well wtf, i wont know until i get em.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by -Racer X- &raquo;</TD></TR><TR><TD CLASS="quote">ya, i heard they are mad hard to tune too...ive wanted some for the longest tiem and peopel are always, dude you know how mucht uning those take? its like...well wtf, i wont know until i get em.</TD></TR></TABLE>

Umm get them and try it
you dont know till you have them
Unstreetable to me is the only way i go

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20---Vtec &raquo;</TD></TR><TR><TD CLASS="quote">

Umm get them and try it
you dont know till you have them
Unstreetable to me is the only way i go</TD></TR></TABLE>

haha, coulnt agree more, All these myths that ppl say, "I hear this and that, and you cant do this and I would NEVER do that." Its all BS. Talk to some ppl that acaully have them on their car and see what they have to say. Everyone has a different opinion of what is steetable. But you can run ITB's on the street just fine. Just takes a bit of tunning (Standalone and I have seen ppl use Hondata and get them to work). The reason why a lot of ppl dont run them is because, Gas milage sucks. But doesnt it with any high HP motor? and they cost a lot to do right. But once again, cost probley isnt important when you want to get things done right on a high HP motor.

 

LOL i know ...there is a group of friends of mine that say that **** as well

LOL it comes down to ....when your full race car can beat my streetcar then i will listen to the myths

 

They are streetable me and buddies at the shop put TWM on a customers car and yes it is driven everyday without any problems we are also running electromotive on the car as well.