Hello! I own a Honda Civic 2.2 I-CTDI at the moment, model year 2007, the version with DPF that was sold only in mainland europe. At the moment, my car is slightly tuned to about 160 BHP (from 138 BHP stock), with the EGR rate reduced (not fully deleted, it still works at idle, but closes as soon as power is applied) which seems to be a good compromise to me and it works flawlessly together with the DPF (intervalls between regenerations almost doubled, which indicates that less soot is emmitted, this also corresponds well to the observations made in freezing weather when the EGR is disabled in stock condition in this car). Because of the DPF and other possible issues i did not want to go all the way to 180-190 BHP, i just wanted to remove the sometimes restrictive feeling of the stock map, which seemingly got worse after an ECU update (subjective comparison!). Because a downgrade was not possible, i went for the "soft" tuning option. I did not want to go for the known full EGR delete solution, because it seems to have issues with excessive smoke, which could be a show stopper for the DPF. Apart from that, i have also fitted a Webasto parking heater, mainly to preheat the engine in winter and of course also defrost the windscreen. I have a special setup with a switch which disables the heater fan when i only want to preheat the engine, e.g. when windscreen ICE is no issue. This saves fuel and also reduces battery wear. I also installed an LCD oil temperature gauge (custom programmed bar graph) to make sure the engine is fully warmed up before pushing it. I have also access to an HDS and record logs (e.g. DPF regeneration) frequently. I can provide some of these if someone is interested (PDF printouts or original files).