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The flex pipe is a pipe that conects the exhaust manifold to you exhaust so that when the moter shifts it doesn't shake the whole exhaust syster. Yes it can be the reason that you car is so loud.

AnswerOR, it is a cheap way to replace a faulty exhaust pipe.

Hi, I own a 1990 Plymouth Laser also. The flex pipe is on what they call the "J" pipe. It attaches your exaust manifold to your catalytic converter. There is also a brace for the "J" pipe that runs from the pipe right under the manifold and attaches to your engine block. It has been known to cause a hole in the pipe where it wraps around.

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โˆ™ 2011-09-13 13:22:04
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Q: What is a 'flex pipe' what does it do and can it be the reason a 1990 Plymouth Laser engine is really loud?
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