Originally Posted by JL330
Tb = throttle body. It's just a spacer between the throttle body and intake, I honestly don't see it being too beneficial.
You got that right, A TB spacer was beneficial on an older carbureted car because it gave the air and fuel more time to mix before reaching the cylinder. Since on our cars (and every care these days) fuel is introduced right at the cylinder they serve no purpose.
Makes a nifty paperweight tho!