Hi, I am new to the forum so please forgive me if this has been asked before. I have an 03' Lariat FX4 and will be doing exhaust work on it soon. I would like to either install Raptor mufflers or at least a newer model truck mufflers (2019-2021 etc,). Besides the obvious fabrication that would need to be done is there any engine or computer retuning that would need to be done? I am not worried about the fit but didn't know about back pressure, proper exhaust flow etc.

Does anyone have any ideas?

Thanks
Keith

 

No, not with cat back mods. You should be good to go.

 

Thank you