Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Whats that sound?? My car doenst have a TURBO

No need to rev the car with someone under it, look for black soot marks. Sho Shop pipes are known to fail around the connector portion of the flex pipe. Black sooty deposits indicates a leak. Most of the normal whooosh sound on our cars comes from open element air filters, especially under part throttle. You should hear my 3 liter talk to me!!!