LB7: Question

[Dirtymx]

Hi I have an 04 lb7 Chevy duramax and I have a stage 4 tune from ppe and when I bought it and installed the tune it had a lot of power and moved quick off the line and now I had to replace the alternator and the belt and now it seems like it doesn't have the power and doesn't seem to get off the line quick is there anything I can check to get all the power back I had from the stage 4 tune

 

[Awenta]

Put the old alternator back in

Seriously how about details. Check the wiring by the alternator bracket.

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[IOWA LLY]

Did you forget to plug the mass air flow sensor back in??

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[Dirtymx]

The old alternator went bad it wouldn't hold a charge anymore

 

[Dirtymx]

I think I plugged them all back in

 

[TheBac]

Go back and check ALL your work. Dont just assume....

 

[Dirtymx]

More info on it the old alternator was a 100 amp and the new one is. 145 I have put diesel additive into and it helped a little but not a lot so what can I do what other info would you like

 

[djforrest119]

A new alternator isn't going to drag the engine down. Not to insult your intelligence but you DEFINITELY plugged the MAF back in? Didn't remove the passenger side intercooler line or unplug the MAP sensor for some reason? It didn't "lose" the tune

 

[Dirtymx]

So what should I do unplug the maf

 

[RPM Motorsports]

If you UN PLUGED the MAF, make sure it's plugged back in tight. If you removed the MAF for some reason, make sure you put it back in the correct direction.., they are directional!