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Fixed Vane Tuning Modern Duramax

Practical Diesel Tuning

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Discussion and questions related to the course Practical Diesel Tuning

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Truck is a L5P and runs okay once the turbocharger spools but seems to take a little bit longer than it should. I know it isn't going to be as quick as a VGT but it is super clean like it isn't getting enough fuel. What is the most efficient way to add fuel? Main injection PW table or......?

Lower the values in the affected range of the smoke limit table by .05-.1 for extra fuel on throttle transition. It should help quite a bit - a little goes a long way.

Nick I appreciate the reply. Honestly never thought about just doing that. I did add pulsewidth in the ranges I was noticing slow spool and it made a huge difference but a bit dirty for my liking. Lambda smoke limit would be a great way. I guess VGT has made me lazy when the PID controller does all the work to get the commanded airflow(boost)

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