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I don’t know. I was lead to believe that they would help a marginal exhaust pass.
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Sergio
The GT Lid Whisperer
PCA 42yrs - National DE Instructor / Ex-RGruppe #197
'19 718 Cayman S (9th Porsche/1st with PDK)
'14 Subaru Forester XT (Porsche support vehicle)
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