TB and TB spacer

ok, so I'm a newbie to all this engine performance jazz, so what will the TB spacer really do?

The main thing they will do is cost you money and time. The people I know that have tried them on fuel injected Jeeps can't tell a difference. I think many people that claim there is a difference are falling victim to the Placebo Effect. They spend money on stuff so they convince themselves they can feel a difference.

no performance benefit here, but i DID document a 1-1.5 mpg increase over the past 5000 miles, so i think thats well worth it. with an FIPK or other open element filter system, expect some whistling from the TB tho
-Bennett