Re: Need advice and tips to get better performance and gains out of my 4.0
Throttle bottle spacers are only good for a little more sound, that's bout it on newer vehicles. Older vehicles, like 90's and earlier they're good. TB you can get a bigger one or have it ported or both.
2001 Silverstone Metallic WJ Limited
2005 Black Chevy Tahoe Z71 4x4