remove the chatter valve
It can't be done without cutting the pipe
You loosen the pipe bolt and slip in the motor with an litiosiosantitarial valve then rev the engine slightly to test.
Under 400 GPM at best (without friction)
This all depends on the class of Reinforced Concrete Pipe (RCP) it is. Typically the manufactorers of RCP recommend one foot of compacted fill over a pipe for construction traffic. As long as the material is not wet I would drive over it any day.
There is a coupling that almost all plumbing stores should have(including lowes). Its name can vary but is commonly called a dresser coupling or a raybolt.
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.
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 made of layers of woven stainless steel.
You can use regular exhaust pipe providing it fits and you can bend it into the location.
You need a welder the flex pipe part and a saw and a car lift.
No you don't. They can cut the pipe and weld the flex pipe into place...otherwise it will get VERY costly
most likely the converter is plugged up and caused a leak in the flex pipe
It's cheapest to buy a universal pipe and weld it on yourself. The universal flex pipe part is Walker 42216. It goes for $25-$30. If you bring the pipe to a shop, the shop should charge you around $50-$80+tax in labor to remove the old pipe and weld the new flex pipe in.
Yes, there is..
A car that has a bad exhaust flex pipe will not pass inspection in any state that requires it. The pipe will need to be fixed before the car is inspected or it will fail.
You can drive a car without an air intake pipe but it may end up pulling hot air in from the engine compartment. This will reduce the engine's overall performance.
A GOOD MUFFLER SHOP LIKE MEINEKE CAN CUT OUT THE BAD SECTION OF FLEX PIPE AND WELD IN A NEW ONE. USUALLY TH PIPE IS AS GOOD OR BETTER THAN NEW.