I was researching on throttle body spacers and I came across the ARAID spacer. They claim it enhances mid range power and fuel efficiency. I am only hoping the fuel effiency improves. Is it worth the money, the $80-100 you will spend on it? I was thinking about trying a cheaper one because they should all work the same, they let a colder denser air charge to enter the engine by restricting some of the heat that gets to the carb. Let me know of anyone else has tried them and their results, if any.