Throttle body spacer
I've got a friend of mine who picked me up a throttle body spacer as a gift. Do these things do anythig for the performane of the car? It says a 10-15hp gain but I highly doubt it.
2007 V6 Mustang w/ Pony Package. Performance Mods - 2.25 custom aluminum catback exhaust with a Magnaflow muffler, AirRaid cold air intake, drilled and slotted rotor's front and rear, SCT Programmer, Ford Racing Tlok, Motiv 4:10 gears, LFP underdrive pulley