Quote Originally Posted by BABY J
TWM is at the "top" of the ITB game, but are DEF not the most affordable --> http://www.twminduction.com/Home/Home-FR.html

Redline, lesser known but decent product --> http://www.redlineweber.com/html/thr...side_mount.htm

Jenvey (s2000 ITBs put them on the map in the US, but they were always on the map overseas) --> http://www.jenvey.co.uk/

ALSO Asport makes some nice ones (48mm)... I can't remember their site though. Am I leaving any of the major players out? And you can also make your own!!
Of course the Toda ITB's can't be left out of that list. They are uber expensive. The TWM's can be bought for 1200 or so. The Toda ITB set up will run closer to 2k. Yes, the DIY Hyabusa ITB's have been well documented to be effective. A good way to get into ITB's for a good bit less money. You will need an intake manifold to use for mounting/initial runner. There is plenty of documentation on doing these and if you look there are some people that are building them and selling them already made. The throttle bodies are a little smaller than what you would normally get with the Jenvey/TWM but good none the less. I believe the hyabusa's are around 32-35mm each. Still a lot more air than a stock 60mm TB. I believe Honda Tuning within the last six months did a step by step article on the DIY ITB's which they put on a sohc, but the process is the same. Again, make sure ITB's are the crowning touch on solid build including: cams, valvetrain, GOOD header, standalone or obd-1 chip/hondata, higher compression, etc. Good luck with them. They are definately a neat addition to a good build.