Emission based tunes vs. Non emission tunes

[8brnr]

If you have a straight pipe on a 6.4 and had an off road tuner with the filter off option, (sorry, trying to avoid the ***), and were to get a custom tune that is written for filter on, does it make a difference? Can you still choose to have the filter off and the tune perform the same?

 

[Lipka101]

Yes.

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[8brnr]

Thanks for the reply!