Lund Tune Help!!

[Crreyes18]

I apologize for the long post

I need help, I know lunds service department is closed during the weekend so I am seeing if anyone has dealt with something like this before or has any ideas on what to do, I have tried to reflash a few times and have made sure my battery is charged. So my issue is I installed and download my lund tune this morning and followed all the steps well when I go to turn the car it Idles for about 3 seconds and then shuts off completely. Not to sure what is going and I don't have a check engine light and the Ngauge is telling me there are no codes being thrown. Please help. thanks

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[Schwerin]

Are you able to reload the stock tune, or reload Lunds?

 

[Crreyes18]

Yes I returned the car to stock and reloaded the lund tune a twice with the same issue. Haven't tried turning the car on stock because I installed a 2018 intake manifold on it so I don't want to turn on the engine with a stock tune and the new manifold as I'm not sure if it will cause any more issues

 

[Zelek]

Who installed the manifold? Might be a leak somewhere. Are you using lockouts?

 

[Crreyes18]

My buddy and I installed the manifold this morning followed all the steps properly, yeah I'm using lockouts

 

[Crreyes18]

Ok so I returned the the tune back to the stock tune and the car turned on and runs, so I'm thinking it might be the tune but I'm not sure anyone got any ideas?

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