I've spent and lost a bunch of money going through parts, but I think part of it, is that I just like trying to install stuff on my own. And one of the reasons i even bought the car is that the aftermarket scene was great, and these cars take so much power, it's not funny in this price range.
I'm a Dad of elementary school kids. Gave up the minivan and made the GTI my daily. It's not without it's drawback, space being the main issue, but for the most part we've learned to work around it, thanks online shopping
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I'm Bascially FBO(no IC intake/discharge pipes) with coils and 19s. Makes me happy to start the car in the morning and look forward to driving back home from the train station. My only regret is that I don't get to drive it enough.
EDIT: Since it became my daily recently, I did remove my AWE catback over the weekend as it was just too loud with the kids and sadly because I'm old, especially when getting into boost. MAP DP with resonator works well with the OEM exhaust.