Any modifications to the car would require a retune. Otherwise the aif/fuel ratio will be messed up and may actually lead to a decrease in power and response. Trifecta does offer Advantage+ and Elite version of the tune, not sure which you purchased. I only have the standard tune here as I only have stock parts but from what I gather if you have either the Advantage or Elite you can data log and send them the results and they will do a custom tune. You would have to contact them for more info than that.
can you notice the diffrence in your vehicle after you added that? i was thinking about getting the one you have as i have all stock parts.