Hi, I recently had my BBK catted x pipe installed with my magnapacks. When I started it up, it sounded a little louder and had a little different sound, but once I rolled the windows down and started accelerating, I could hear this whistle sound. I can only hear it with the windows down and when I push the gas at low RMPs or else the exhaust drones it out. At idle it sounds normal. I also have a k&n ram air intake, but it never made a sound like that before the x pipe. I took it back to the guy who installed it and told him what I heard. He lifted it up and let me stand under it, but couldn't hear anything. He told me it could be the throttle body making the sound since I'm allowing more air to flow through, but I'm not sure. Sometime I can hear a very very faint ticking sound in the whistle.
Please help if anyone knows what it could be and how to fix it.
Please help if anyone knows what it could be and how to fix it.
