W205 c250 power increase...

[sparkynw]

Hi, 3 months in and thoroughly enjoying daily life in my c250d premium plus wagon. Always had beemers previous and much prefer the interior in this to even my m4. Last car was a 335d which with circa 310bhp and lots of torque was no slouch. Is there any ‘safe’, reliable, proven power increases that can be done to my car? It’s a 66 plate but still in warranty which I will keep up. Done 25k.
Thanks