May be your finally driving the car hard enough to get all the crap burned off the pipes and out of the cylinders.
How often did the engine see redline before ?
Mine see it every few day's. If not a few times a day.
210,000miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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