Re: Throttle body spacer, worth the time and money?
I've had them on V6's and V8's and they've helped in gas mileage, but along with it I also had engines bored out, intakes, exhausts, etc, etc etc. added too. But newer vehicles it's pretty much a waste of money on most models.
2001 Silverstone Metallic WJ Limited
2005 Black Chevy Tahoe Z71 4x4