Have a quick question for you, because maybe one or the other has already done that, or deals with the topic: to let my Omi 2.5dti tune (optimize) by software or electronics. My weighing has now covered 130,000km in 3 years, driving mode rather defensively, my average consumption is at 100km at 7,4l (with automatic!). I have found only two (expert) tuners for the 2.5dti so far, for one project Opel, and for the other project Opel. other stone builders. Prices starting from EUR 700.00 to EUR 1900.00 are represented, but only on the margins. Steinbauer:http://www.steinbauer.cc/index.php?… Project Opel:http://www.projektopel.de/?section=tuning_opel_omegab Which would you recommend, or of which do you think more? Motor stress? Automatic gearbox? Absolutely not yet conclusive to me if I change anything at all, but especially the NM ( Opel project) are of course very tempting, if it has to be done quickly. ..