Do throttle body spacers work on Jeep Wrangler TJs?

There are some products out there that claim to be able to improve on the already significant engineering that has gone into your motor. The 4.0 engine in the Jeep Wrangler TJ is well known to be a hard engine to get power out of in terms of "bolt-on" modifications. You don't stand to gain any

I appear to have a throttle body spacer.

Should I remove throttle body spacer?

Jeep Wrangler Airaid PowerAid Throttle Body Spacer (2007-2017 JK

FORD 2.0/2.3 EB THROTTLE BODY SPACER - Boomba Racing, Inc.

PQY Throttle Body Spacer Compatible with 91-06 Jeep

Should I remove throttle body spacer?

✿HIGH PERFORMANCE: Designed to enhance off-idle torque from 800 rpm to approximately 3,000 rpm. 1″ thick to provide a smoother, faster and more dense

Throttle Body Spacer Compatible with 91-06 Jeep Wrangler TJ YJ LJ Cherokee XJ 2.5L/4.0L Engine Gas MJ w/Gasket 1 Raise Manifold Carb Black

Aluminum Throttle Body Spacer For 91-06 Jeep Wrangler TJ YJ LJ

Opinions on aftermarket throttle body?