Flex pipe.. Why?

[XLexusTech]

I am noticing some builds are using Flex pipe. like this.. on RWD builds.. these were originally used only for transverse mounted engines since the torque of the motor made solid mounting an issue.. .. so I am wondering if I am missing something as to why this is a thing? It it just a trend or is their some material value for a RWD car that I am missing..

[tpiini]

I put them on mine simply to make it easier to line everything up when taking my exhaust system on and off. Also, my simple mind told me that I’d have fewer problems if things weren’t twisting against each other as they heat, cool, and torque twist around. The flex connectors were cheap enough to add in when I welded up my system.

[Tsaints1115]

NVH for factory cars also.

They're not a terrible idea.

[GoodysGotaCuda]

Along with the above they can also be used on exhaust systems with very tight clearances to the floor or body work. You can rigid mount the exhaust and put a flex pipe at the engine to accommodate movement.

[icemanrd19]

Allow for fine tuning exhaust routing, vibration doesn’t possibly break exhaust hangers, helps with movement if you bottom out some etc.

[tpiini]

Along with the above they can also be used on exhaust systems with very tight clearances to the floor or body work. You can rigid mount the exhaust and put a flex pipe at the engine to accommodate movement.

Sadly, I found out the hard way that I still had vibration when I rigid-mounted my system starting a couple of feet past the flex connector. Once I got rid of that mount all my vibration went away. I still have my tailpipes rigid-mounted with no problems.

[shelteredchevelle]

Put a couple in for the same reasons

[TBART70]

Any recommendations on brand or design? I need to put them in now, I raised the trans to get better driveline angles, it is a bitch to get exhaust lined back up.

thanks

[67-LS1]

These are great for NVH and heating/cooling changes but shouldn’t be used to correct mis-alignments. They need to be installed “centered”. They can only move so much in each direction so starting with a mis-alignment minimizes the remaining movement on that axis.

[TBART70]

I didn't plan on using them like that. I will reposition the exhaust and add the flex, I figured I would add them now because I have to take out the strain, might as well add the flex.

[cpd004]

3 different higher end shops have tried to steer me away from using these. I still plan on using them when I can find a shop near me to do the work.

[XLexusTech]

3 different higher end shops have tried to steer me away from using these. I still plan on using them when I can find a shop near me to do the work.
agreed.. I went without.. even though the shop who welded the exhaust tried to convince me I needed them ..

[beyonda68]

Where did you get those exhaust clamps sheltered Chevelle ??? They look great :headbang:

[mtm87tx]

It might be me imagining things but I get a really bad, almost exhaust leak sound, through mine.

I am thinking about using that space for resonators.