Popular Post Frederic Posted December 4, 2019 Popular Post Report Share Posted December 4, 2019 For all the Pajero 2007-2011 owners around, this topic has been addressed in the past on Mitsubishi forums and was brought up here a while back, but i wanted to compile all information in one topic to finally condense all information and share our experiences. The famous issue that Gen4 Pajeros built between 2007 and 2011 have, is the automatic upshifting in tiptronic mode once the rpm reaches 5200rpm. While for overlanding or other offroading activities this is not so much of an issue, it is a BIG issue for the dunebashers amongst us if attempting a climb on the bigger dunes (Faya, Sweihan, Liwa, etc...). With some practice you might try to stay just below that 5200rpm point to keep it in the gear, but this is far from easy and on bumpy dunes keeping your foot stable on the pedal is easier said than done. On a 3.8 Pajero the torque reaches its peak at around 2750 rpm and starts to decline after 4500 rpm. At that point the horses have to take over and your 184 kW (247 HP) is reached at 6000 rpm. When limiting at 5200 rpm you would lose out 14 kilowatts (18 Hp). While looking on the other Mitsubishi forums, 2 options have come forward which i will describe below: 1. Omani Gear Hack:The Omani Gear Hack works by disabling the output speed sensor which will stop the car from auto shifting. This hack is at your own risk only and although it solves the upshift issue, it puts your car in limp mode and will activate your check engine light, which would also hide other potential dangers ! You can find the detailed instructions attached. It mentions to use the car in 4LLC mode which we do not recommend doing. Maybe the hack works in 4H or 4HLC too, but haven't received confirmation of that yet. 2. Unichip RPM Cutoff: This is a lesser intrusive solution using Unichip to limit the RPM to 5200. The Unichip ECU piggy back computer with the RPM cutt off option allows you to put a limit on the RPM to prevent the gear from autoshifting in sports mode. Unichip comes with a 5 map selector, so you set one of the maps on the RPM limit at 5200 then car will not upshift on all gears when in tip tronic mode. However you will not be able to unlock the power beyond 5200rpm... On top of that, most of the GEN4 Pajeros have the ASC (Automatic Stability Control) that needs to be switched off during offroading. If your ABS is still kicking in, than it is also advisable to remove the ABS relay in the engine bay. (relay, not the fuse as these ones are really hard to pull out). Your car will now change in a Christmas tree dashboard. Looking at all these issues to get a "newer model" car to behave as it should in the desert, it comes as no surprise that many dune bashers revert back to using older cars which don't have all these sensors on board. PS Does any of you have experience with the Pedal Commander, and would it have any benefical effect on the sluggish reaction of the Pajero ? Pajero Gen 4 Gear Lock _ (Omani Gear Hack) Stops Gear Autoshift (1).pdf 5 1 1 3 "Go as far as you can see; once you get there, you'll be able to see further." Link to comment Share on other sites More sharing options...
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