Moin, after reading here that it should make a noticeable difference, if you have the engine software optimized with the 525hp V10, I wanted to let it be done with mine too. The mostly recommended tuners like KH-Tuning or Mega Speed are unfortunately everything else than with me around the corner. Therefore, I looked here in the Hamburg area for tuners, who allegedly also have an idea of the R8. Now I came across someone who optimizes the MK1 42- 5.2 FSI V10 (525hp) on 565hp/565NM offers. Then he also has an MK1 42- 5.2 V10 (525hp) which he optimized to 590hp/600NM. I didn’t know that there are two different engines and only knew the 5.2 FSI V10, just like my 2012-er is also on the engine cover. In which model is the other engine installed and what do they differ, that they can be optimized so differently? Greeting Steffen