Has anyone ever used anything like this?

http://www.performancethrottles.com/honda.htm

It says its to increase throttle response and give you a minimal horsepower gain...All they really do is bore out the thottle body to 58mm or so...Does it really work or BS ?

 

it prolly wont give you any more power but it will feel like it because it will increce throttle response. but it has to be done right or you're screwed

 

That thing is huge but wouldn't it be messing with the velocity of the air getting into your engine?Sure it looks like more air can get into the engine but that air is moving slower because there's more space to take up so wouldn't you just be getting less air in each charge because it's slower? Might work better on force fed engines.

 

You shouldn't need to change your throttle body unless you've done plenty of mods to your engine, or went to T/C or S/C.