Mitsubishi ECU Up for sale is a Working, in excellent condition Mitsubishi ECU. Unit came out of a 1989 Sigma V6, should fit 88-89 of the same model. perhaps others as well. See part numbers at the top of the listing. - . This unit offers a 30 day functionality warranty. In different markets, the MITSUBISHI SIGMA was called different things. Mitsubishi Eterna Mitsubishi Galant Mitsubishi Sigma Mitsubishi V3000 are all "Sigmas" Unit comes with a 30 DAY FUNCTIONALITY WARRANTY. As always with mitsubishi ECU's we physically inspect them internally as well as runtest them before they will go out to you.Sigmas are classics now! Keep yours going!As always with this type of component your best bet is to match the part number to the one on your original ECU. A faulty ECU is one of the most common no start or random stalling problems with these cars. These can also cause issues with erroneous check engine lights, idle control problems as well as emission control & cold or hot start problems. I have also seen fuel pump relay turn on faults (ECU won't turn on the fuel pump), as well as an condition where the high speed injector driver has failed. This causes the car to sit and idle fine, but it won't accelerate.If your car does not have these issues but you intend to keep it a while, I recommend our customers keep an extra ECU in the trunk. These units now have to be special ordered from most dealers new for big $$ (often times over $1000!), and you can never find one when you need one. Even now finding a good one second hand is getting to be quite difficult as these cars get older.