Every startup from my experience. Maybe for a shorter time after initial prime but the truck basically starts on the electric pump and once pressure is achieved (engine rpm up) the electric pump cuts off.

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I wasnt aware of that thanks for the info.

 

Anytime. Another thing worth nothing is a belt driven pump changes the dynamics of service if your not doing your own work. For instance if you take it in for a belt change there will likely be additional charges. Fuel system diagnosis, likely additional time and a technician that's not familiar with the setup will probably charge more to diagnose and repair or may not even be willing to work on it. You may get someone who tries to fix it without doing proper research and cause more problems. While most of this is rarely going to be an issue it's worth considering. Diagnosis of electric fuel pumps is pretty straight forward and can be done by any automotive technician.

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talked to glacier diesel performance and the stock pump is not required for startup only there as backup in case of failure. a lot of people are running them without stock pump.

 

Worked on a 06 2500 for a dealer about 6 months ago. Pump ran at every start up. It had a glacier kit. Was not very impressed with the quality of that kit. The dtt looks like a much better kit to me.

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maybe it wasnt installed correctly not sure. i am gonna talk to dtt to see what they have to say about there system too.