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:
Gen III Clear/Chrome Projector/CCFL Halos/LEDs, 8K HIDs, 8K HID Projector/Halo fogs, Clear/Chrome Tail Lights and 3rd Brake Light with LEDS, Diamond Mesh Upper and Lower Fascia, Spectre CAI, Breather Filter, Cabin Air Filter, Low-Temp Thermostat, Jet Stage 1 Chip, MagnaFlow Exhaust with Resonator Tip, Shorty Antenna, Front/Back De-badged