2006 Volkswagen Jetta 5 cylinders.

It shouldn't overload the stock engine, but it may disorient the computer, does the kit come with new sensors, for the intake manifold and the exhaust?

I haven't selected the intake and exhaust as yet, but i was wondering if you can advise me in that field. I don't want an exhaust that's too loud maybe u can let me know what brand in particular.

I would love to help you out but I am a factory technicians and I don't understand why you want to modify your engine. The factories spend millions of dollars in designing your car precisely, if you wanted a more high-performance vehicle you should have purchased the GTI, those are bad A$$, instead of spending additional money to make your Jetta into a GTI, my advice to you is sell your Jetta and buy yourself a GTI.