You're replying to my posts, you're not reading them.
A downpipe isn't going to do dick if the boost isn't turned up. I'll say this one last time for the kids in the back of the class room, but I don't think your car was actually tuned. It seems to me like it didn't actually flash.
I also...
Jesus christ they're tryna fuck you. Find a new shop that
1) Isn't trying to fuck you
or
2) knows what they're talking about
(Depending on which side of Hanlon's Razor you fall on).
Since you don't appear to really know all that much about what the various components are (which is fine, we...
Intake doesn't do anything. Zero.
Downpipe you'll need for a tune.
Chargepipes hold boost pressure. Replace it if yours blow up, you run nitrous or meth, or you change the turbo or intake manifold.
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I highly doubt that your car is tuned at all. There's a Eurocharged (it's a chain) here...