S60 Radiator grill and other questions

Hello Did I get an S60 about 2 weeks ago, must say really horny part except for a few little things Question 1: Did I discover on the internet sun PPC box or something, my question: Should I have to change any parts so that my engine doesn’t fly around my ears? because many tell me the engine and the other parts that are congested with me are tuned to 140hp and if I then at once to 190hp tune goes faster what in ass or much faster, true that? And there stands the consumption drops by 20% real? And really as easy to tune as it is there or a bit more complicated?Link Question 2: I bought a radiator grill from Ebäy, came today and my worst expectation has come true, it doesn’t fit! With the description stood Volvo S60 from Bj 2000, well Ebay halt. The Klips things wodran the grill holds are different from the original and have the bottles spacing. I asked the dealer if he still has a suitable one, but I now my question: how can I get that thing even without the Klips things, has an experience with it? Have pictures of the grill attached to the old and the new! Sorry and thank you for your answer already greeting Eugen