First time modifying vehicle questions about tune

[Mashaustin10]

So i had my car torn down and had some parts thrown in at my shop. Tuned the car with the cam made 473whp. However at the same time i put on headers that are catless, i plan to get high flows soon. But i also have a NPP exhaust, being catless and cammed/tuned would i need to worry about a re-tune typically by setting up a controller for the valves and running it closed at idle/low speed when im leaving my apartment complex? Wouldnt expect to do it but 10% of my driving time and not under hard accel. Not sure if it would add "backpressure" or throw things off majorly. First time modifying a car (outside my mustangs catback & k&n intake.
Thanks,

2013 Camaro SS M6
Parts
-Speed Engineering Headers
-TSP Stage 3 Cam
-JLT Intake
-misc. pushrods/trunnion/springs/lifters etc.

[RupertPupkin]

Don't need tune for the baffles. Keep it open. Minimal sound difference. People use mild to wild switch all the time. I opted out for that feature and just did a muffler mod.

[tartagliazl1]

I would imagine you will need to retune it after you install the cats.

[0stones0]

Originally Posted by tartagliazl1

I would imagine you will need to retune it after you install the cats.

^^^^
This
Adding the cats will definitely change how she breathes.

[Mashaustin10]

I appreciate the responses I am looking to build my own controller for the valves. And I do expect to retune after the cats just figuring a valve controller could be a potentially cheaper and quicker solution to save my lease ��. With no cats and a xpipe she is very rowdy and I love it, just thinking the neighbors windows 10ft from the car may not at 6:30am.

[FasNuf]

I'm catless and my air fuel ratio has no change when I open my NPP exhaust. Cats will need a retune if you install them. As far an a Mild 2 Wild goes, you don't need to buy one. A simple switch is all that's needed. I went a little overboard, but here's a video of mine.

https://youtu.be/R1WfpAotXIY
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[RupertPupkin]

Originally Posted by Mashaustin10

I appreciate the responses I am looking to build my own controller for the valves. And I do expect to retune after the cats just figuring a valve controller could be a potentially cheaper and quicker solution to save my lease ��. With no cats and a xpipe she is very rowdy and I love it, just thinking the neighbors windows 10ft from the car may not at 6:30am.

Your neighbors don't like the sound of Murica waking them up?!? Lol

[Mashaustin10]

Originally Posted by FasNuf

I'm catless and my air fuel ratio has no change when I open my NPP exhaust. Cats will need a retune if you install them. As far an a Mild 2 Wild goes, you don't need to buy one. A simple switch is all that's needed. I went a little overboard, but here's a video of mine.

https://youtu.be/R1WfpAotXIY
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Do appreciate that link, i have the parts on order to make my own switch as well. This is going to be a huge help! Thankyou!

[Mashaustin10]

Originally Posted by RupertPupkin

Your neighbors don't like the sound of Murica waking them up?!? Lol

Id imagine not, more for peace of mind my lease renewal is coming up. Just need another 12 months so i can work on a place with a garage