Mine does the same thing at idle and I have lift pump...I wouldn’t worry about it


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That’s a relief thanks for your input, if you learn anymore about the issue I’d love to know !


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The only time to be concerned is if it starts not holding rail when you get on it. If it’s off 1-2k then start being concerned.


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Mine does this also I wouldn't worry.

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If you're going to run the Sport/Econ tune you should run a lift pump - I kept getting change fuel filter messages on my DIC. After the lift pump was installed it ran much better when I got on it (without messages).
Also try running the Hot Street tune - I preferred the way that tune was set up to the Sport/Econ tune. When you install the lift pump you can run the 150 hp race tune as your daily tune - I do and love it.

 

I'm the same. I run my GDP Rampage 230hp tune as a daily. Awesome tune for eco.

 

I run the 150 Hot Street tune from Motor Ops and seem to get the best mpgs. I do not run a lift pump but don’t drive aggressively. My driving is 90% highway.

 

What mileage are you guys getting running the 150-200hp tunes?

 

I hover around 23-24 mpg in the summer and around 22-23 in the winter due to our colder climate, winter diesel and a lot more idling.

 

Running the GDP EZ LYNK 200hp tune I'm getting 25mpg. Winter in Manitoba is rough, but I'm still at 22mpg. Installed my dsp5 switch, so now I have a 220hp tune. Just started running that.

 

awesome. Wondering what sort of mileage I'll see after my PPEI/delete/lift pump arrives this week. Currently I'm getting about 17-18 mixed.