Throttle body spacer.

[circmand]

How it works, supposedly:
http://www.carsdirect.com/aftermarke...e-body-spacers

Whether they work or not is debatable. There's a lot of info out there on the web....check it out. For the price of it....mmmmmm....I'm going to have to pass until someone gets it on a dyno.

I'd be more interested in intake manifold spacers.

There is always a ton of info on the web. But 99% of it is crap made up by people who want to sell it to you. On the Interweb you can create fake web pages and fake experts and pretty much fake anything you want. Thats why people need to understand the need for real sources like newspapers instead of reading what some 30 year old guy living in his parents basement writes.