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      06-06-2019, 10:09 AM   #11
pustinek
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Drives: 2014 428i
Join Date: Aug 2014
Location: Eu

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I had same situation with my ebay downpipe.

Since downpipe is just a tube that has same dimensions as stock Cat i wasnt ready to spend 300$ for 1 hour of work. So i just used angle grinder and made the downpipe smaller and pushed the 2 together. Just make sure there are no holes so you wont have any leaks.

Honestly its just a bit of work for a lot of money saved.
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