ITB's on a dsm?

Custom itb's for a dsm? anyone? looking at doing it with small motorcycle throttle bodys, figure it will be cheaper and easier then a turbo project.

pardon my ignorance but what the hell is a itb?????

Custom itb's for a dsm? anyone? looking at doing it with small motorcycle throttle bodys, figure it will be cheaper and easier then a turbo project.

Dude what the fuck are you talking about? :confused: Two tb or something? Motorcycle tbs are tiny why would two of the make you any fater? That vs turbo charging are you kidding me? Try to explain youself a little better, please :)

pardon my ignorance but what the hell is a itb????

Individual Throttle Bodys :dunno:

good luck building the manifold for that, and with the way the DSM engine is laid out the TB's will be right in front of the firewall sucking nice, dirty, hot air. Also, do you realize that you'll need custom engine management like a GReddy E-manage and will need a couple hours on a dyno to get it running halfway decent?

I dont think its much of an option for turbo cars, or at least doesnt provide enough gain to offset the cost and complexity. Plenty of NT motors run ITBs, but I dont know that they even see much of a gain from it. This is more of a mod for extracting the last HP out of a NT setup, which is retarded in the first place :icon16:

I dont think its much of an option for turbo cars, or at least doesnt provide enough gain to offset the cost and complexity. Plenty of NT motors run ITBs, but I dont know that they even see much of a gain from it. This is more of a mod for extracting the last HP out of a NT setup, which is retarded in the first place :icon16:


Well said, :iagree:

taoda makes them for hondas. good luck,post your progress

ITB's are individual throttle bodies, i have noticed most dsm fans dont know much about itb's, its actual something alot of honda tuners dream / wish to do. I saw ITB's on a turbo hatch b16a motor, nothing build, just ITBs, t3/t4 turbonetics turbo, a FMU, and couple small things to make the turbo run, and it was running low 11s and high 10s. I'm not looking at using the Junkyard setup anymore, i'm actually looking at spending the 3000 for the itbs and have it installed on a GSX :)

you would still be looking at some kind of custom intake collector to run 4 tb's into one IC pipe. if you can make it work more power to you but i think its going to be a lot more headaches then its worth. one different thing about hondas is i think they use a map sensor for airflow. we use a mas which means that any vacuum/boost leaks screw up the air/fuel mix because the air that leaks out has already been counted by the ecu

DSMs are running 9s on the stock single throttle body. I think the money could be better spent elsewhere. Remember that the turbo forces the air in regardless of what is in the way. Reducing intake restriction in such a slight way wont help enough to justify the cost, and throttle response is piss poor in a turbo car anyway, so I dont see where ITBs will have any advantage.

that'll be the whackiest thing ill see done to a DSM if that was ever possible.

See this is where I like to be different and go with the ITB setup. I have a project I am working on, I should get pictures up of it, but anyways it has 3" long runners, ITB's then the plennum bolts on after the ITB's. Basically what I am trying to achieve is better spool times, considering lag is the time it takes to fill the area between the TB and the combustion chamber with a compressed amount of air. On a stock intake mani it is a good 20+ inches including the plennum tank, runners, and the ports on the head. Now by moving the TB's within 3" of the head gets rid of about 15 inches of area. This should help spool greatly! I cant wait to try it out. Anyways the TB shafts/plates are all welded to 1 shaft so they open equally (that was the tricky part but with 2 TPS's and a steady hand I was able to get it done)... Keep an open mind because this isnt costing me a dime, the TB's I had and the sheet of Aluminum I got for free, just something I work on when I am bored. I have dyno access whenever I pretty much want it (as long no one else is schedualed) so when I get it finished I am going to try it out on my spyder to see what kind of numbers I can come up with. Before and after results, I think I am going to try to get a hold of a Cyclone intake mani as well just to fuck around and see if it really is all what its hyped up to be (highly doubtful) but I have never seen dyno numbers for it so it just gives me something else to fuck around with for awhile.

Anyways, I'll see if I can get some pictures of it then get back to you guys about it... I still have to make the tank/plennum and I have some plans that are up in the air, I just have to figure out some more flow specs and draw it up and make it. It will probably be something like Magnus's tank but you will still be able to keep your battery in the stock location. Either that or one identical to BJ's. Thats the one I am leaning towards but its still up in the air. Any ideas are welcome!

I dont think it is worth the 3000 to spend on that. do you know what you can do to a dsm with 3000 dollars?

just my two cents.

and jake, I totally understand why you would do it, it is totally free pretty much

Basically what I am trying to achieve is better spool times, considering lag is the time it takes to fill the area between the TB and the combustion chamber with a compressed amount of air.

Not from the TB, from the compressor. All of the space in the IC and IC piping has to be included as well. Adding huge intercoolers and huge piping increases lag to some degree. When racing, lag wont matter much if you use some type of anti lag, no lift shift, stutter shift, auto tranny, etc. I gave up on the whole lag thing years ago :icon16: