sch911 wrote:
This is a good reason to not install headers at all. Never felt the need to "upgrade" perfectly good components which were tested and certified by the manufacturer. Including their fully tested underhood and underbody thermal protection abilities....
The "perfectly good" OEM exhaust manifolds leaked and cracked twice before I replace them with the headers, which ran much cooler with fewer downshifts on hills and about 80 more HP or so. That is one mod that I feel was better than the OEM design and glad I made.