Anyone know what the combined hp gain is from the TRD dual exhaust and a CAI? I have a 4.7L with the exhaust already on and am trying to resist the urge to drop in that CAI.
Also I have read that Toyota Tundra Cold Air Intakes make your engine will be a little louder Toyota Tundra Cold Air Intakes | After Market Parts | Tundra Headquarters. Anyone have an opinion on the noise difference internally?

2007 DC Limited, TRD Exhaust, skid plate, fog lights & tire package.
Also I have read that Toyota Tundra Cold Air Intakes make your engine will be a little louder Toyota Tundra Cold Air Intakes | After Market Parts | Tundra Headquarters. Anyone have an opinion on the noise difference internally?

2007 DC Limited, TRD Exhaust, skid plate, fog lights & tire package.