I was curious if I need to tune the car after I intall a blow off plate onto the turbo (asking for a friend )

 

What do you mean "tune"?

 

Yes.

He means the ECM.

 

My question. Why are you putting on a blow off plate ?

 

For kicks and giggles, I had a blow-off plate on a couple of PT Cruisers in the past and it makes spirited driving more enjoyable for me.

 

I have a MAMBA blow-off valve coming in on the 10th, hopefully, I can use the stock spring so I don't build too much boost. I'll let you guys know if I blow up my car

 

I seem to recall a SS owner wanting to do this same thing years ago. Just for the giggles and the noise. I also seem to remember it didn’t work for him either because he was basically stock and the engine didn’t like the blow off in place of the by pass system. ( he didn’t tune or even know how to tune for a blowoff setup)
I would forget the idea. It’s not going to give you any more power. Want some noise ? Get a loud muffler.

 

Makes sense, I just talked to my local tune shop and they said it takes a "minor programing tweak" to ensure the engine runs correctly. I'll probably do it just for fun because I intend to rip the engine out in the future to put some goodies in it.