Michael Page Posted March 20, 2011 Share Posted March 20, 2011 I have an 05 Vision with the small 11 litre motor. 365-410 is the hp range. Mine set at 365.In hard pulls with heavy loads the turbo pulses, 3 seconds in and 10seconds off.Occasional smoke. Code is 4-5.On level ground or light loads, runs fine. Turbo whistles and works properly.Fuel mileage is good, around 6.75.Sever power loss in the mountains. Quote Link to comment https://www.bigmacktrucks.com/topic/18394-pulsing-turbo-boost/ Share on other sites More sharing options...
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