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Old 11-17-2018, 02:07 PM   #14
sly
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Drives: 2016 Cosworth 2.2 BRZ
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Took the header off. Heat shields are crazy. I can find no sign of a leak. No burn marks, no cracks and the gaskets looked good. I pressurized the header some and did not see any leaks either.

Would failed DI seals really cause this problem? Car idles fine. No shudder at all. The hesitation I described is only slight and only under certain circumstances. I can't even get it to do it all the time.

Last edited by sly; 11-17-2018 at 02:27 PM.
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