How to fix your ECU to remove rear O2 sensor checks and CEL warnings after de-cat.
Hi Ladies and Gentlespoons. Many of us have had a decat. Some choose to fix the CEL indication by use of a special spacer or O2 simulator. Well i found O2 simulation too complex and fiddly to wire, the cel fix spacer from the states fouls the underbody on long journeys as the exhaust expands.
There has to be a better way.....
And yes there is! Been working with grayw today to eliminate the checks for the rear O2 sensor on a standard ECU. Today i can report thats now been fixed!!
So if _Biggles_ the ECU noob can do this, so can anybody.
OK you do have a list of bits to acquire so heres the list:
Hi Ladies and Gentlespoons. Many of us have had a decat. Some choose to fix the CEL indication by use of a special spacer or O2 simulator. Well i found O2 simulation too complex and fiddly to wire, the cel fix spacer from the states fouls the underbody on long journeys as the exhaust expands.
There has to be a better way.....
And yes there is! Been working with grayw today to eliminate the checks for the rear O2 sensor on a standard ECU. Today i can report thats now been fixed!!
So if _Biggles_ the ECU noob can do this, so can anybody.
OK you do have a list of bits to acquire so heres the list:
- Laptop : DUH yep no laptop no ECU chatting, beg borrow, try not to steal
- Limitless or Tactrix Cable : So those can be gotten from Grant @ Gizzmo Electronics (support your MLR trader!) or Limitless themselves
- Ecuflash : Superb FREE software you are going to love forever after today acquired from www.openecu.org
- Aktivematrix ECU Unlocker : Some ECU's are locked after tuning. BOO! This unlocks them. Go to www.aktivematrix.com, sign for free account, download it!
- ROM Definition File : Different for every evo, but go to openecu.org and hit the forums they are all there! Look for your vehicle, if you are struggling to find it, make a post, someone will help you pick the right one!
- You might also wish to consider Mitsulogger or Evoscan as well, you can check for knock etc with those! Evoscan is not free but its excellent. Useful for checking your engine & map health