Hello to everyone! Now I have my best and best Volvo (full equipment), which I had up to now, again 3 years. I bought it as a young used from the friendly. Current mileage is 124,900 km and now I would like to push the performance, after I could not get through to it so far, not because of the finances but because of “fear” of durability and increased load of the technology. But the desire for more performance and easier Ausgleic h the starting weakness at low speeds is at the moment quite big ! The questions, which are now up to date : 1) Should one not realize the project with the current mileage perhaps after all, because one should do the tuning perhaps only with newer engines? 2) Is it true that Heico requires 25% less, since the guarantee falls away ?? 3) What changes with the running culture, afterwards it runs rougher/core or this is louder? 4) Or nevertheless prefers to continue the good as until ? What is your assessment ?? Thanks and greetings to all !