- Jun 29, 2004
- 28
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i asked earlier about if installing a catted x-pipe would void my warranty, and found out that ford can only void your warranty if they can prove in writing that the part you have installed caused the problem. So is there any way a catted x-pipe can cause damage to your car that would leave you with a voided warranty.

). The ford inspectors (if they have to come out) will use that to try and void your warranty. Just put your stocker back on if you have any serious issues with the drive train 