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Just guessing but I've read on here the GDI are having buildup problems on the intake valves because they don't get washed with the gasoline.
So with that in mind, I want to wash my valves and exercise the fuel system with a full throttle maybe 2/3 rev limit rpm blast, I have a 3rd gear right hand corner that goes up hill, I often go full throttle or close to but stay closed loop, and get to 55 mph then jump to 5th. Don't think it really hurts my mpg much, if I shift at 2k I can't accelerate as quickly so higher consumption rate longer than getting to 55 quicker in 3rd.
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