because engine vibration and movement from the torque of the engine would break a solid piece of pipe..
You can use regular exhaust pipe providing it fits and you can bend it into the location.
Some (front wheel drive) cars have a flexible piece of pipe that connects the exhaust manifold to rest of the exhaust system. The length of pipe is designed to allow the engine to rock back and forth on its mounts. Without the flex joint, the movement of the engine would damage the rest of the exhaust system.
An exhaust flex pipe is a braided stainless steel pipe that allows for some movement between exhaust pipes (usually around 6-8" long). It is made of interwoven wires of stainless steel. A flex pipe will need to be replaced within the life of a vehicle and a tell tale sign of expiration is when wires are sticking out or loud exhaust can be heard from that area.
The purpose of the flex pipe is to give the exhaust some flexibility. On front wheel cars since the motor is mounted crosswise, when you give it gas the motor rocks and would over time break the exhaust pipe or even the exhaust manifold. On rear wheel drive cars, the exhaust pipe can twist which gives the needed flex. As far as components, it is just a woven metal sleeve over a piece of pipe that isn't attached to the ends of the flex tube. The outside woven part allows the exhaust to flex.
That would be a flex joint.
You can get a replacement part from RockAuto for about $65 and have it locally installed for under $100.
An exhaust flex pipe is made of layers of woven stainless steel.
Front wheel drive vehicle engines move when you accelerate and decelerate, so the exhaust system must flex with it. These engines are equipped with a front exhaust pipe with a flexible section, which accommodates this movement. When replacing this pipe, you must cut the old pipe between the flex section and the Catalytic Converter. Purchase a new front pipe from the parts store, and with it a short "coupling" piece which will be slightly larger in diameter, so to fit over the two pieces. You will also need two clamps sized to fit over the coupling. Install the new front pipe, with the short coupling at the joint with the old section just forward of the converter. You then clamp the two ends of the coupling to complete the repair.
usually an exhaust leak under the hood(exhaust manifold or o ring/flex pipe that fastens to solid pipe).your car pulls air from the front windshield area,and it seeps into it and blows in
Towards the front right behind the flex pipe, it is the first exhaust component near the front when you look under the car. It looks like a small muffler.
The 2010 Ford Flex has 41.8 in. of front head room.
The 2010 Ford Flex has 55.5 in. of front hip room.