Either wait for the CEL
Or take it to a local mechanic.
I wonder if replacing the O2 sensor's may be the next step.
Hate to throw money at it without knowing what's going to fix it.
199,000 May 12 new ej257 short block, Aug 11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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