[Krytech]

Welcome to the forum and congrats on your Ghibli purchase. What year is your Ghibli?

I opted for the Larini sport cats and love them. Deeper note than stock, louder and more bark and rasp when shifting, plus redline shifts are very noticeable vs. stock. I was able to record (w/ my Vbox Sport) a .5 reduction in 0-60 off the line when I just mash the peddle without brake boosting. The turbos definitely spin up faster. Combined with some BMC air filters, you should get a nice noticeable boost. Add a tune and you'll be set. Just tell the tuner what you've done so they can adjust the tune for your setup. I went with EuroDynamic for the tune.

Since you have a base model, if you want to crack the case and go nuts, you could upgrade the cams and fuel pump & injectors to the S model variants. No clue what's all involved with that, or what else would be required parts wise, but the cams and fuel delivery are the main difference between a base model and the high-end ones. I'm pretty sure the throttle body, turbos and exhaust piping are the same between them.

Good luck!