Hello, I’m looking to get some input from experienced people on what would be the best tuner I could buy for my Dodge Charger.
I own a 2021 Dodge Charger GT RWD V6, it has the performance package.
I have not yet modified my charger in any way, but will be buying a K&N Cold Air Intake Kit.

 

You first to have to either unlock your PCM or buy an unlocked one.

 

Rumor has it, that dodge will void any warranty you have left if the PCM thinks it has been tampered with.

 

Thank you for letting me know. In that case I’ll wait for warranty to expire before doing that.

 

Two things to add:
1. You can always buy an unlocked PCM to tune, then swap your original back in when necessary.
2. With the 3.6, there is absolutely no point in trying to tune it; you're already at 300 hp out of 3.6L (that's only 219 in³). It's pretty well maxed out from the factory. Unless you intend to put boost to it, there really isn't any point.