Why cars do not come with performance headers in stock?

Author: admin  |  Category: Maintenance & Repairs
OstTimber asked:


I hear from a lot of people, that I should change headers in my car. In my opinion, it will not be too expensive for manufacturer to make them a little wider (so exhaust gas could flow faster). Than why do manufacturers do not provide cars with them?
I am thinking to change one too, is it worth it?

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