Up for sale is a Working, in excellent condition Vw Golf Digifant II ECU. VW part number  The SX and the FP interchange.

This is original equipment - good used unit, Made in Germany Digifant 2 System.  Manufactured by either KEN, Siemens or Triumph-Adler. 

This ECU should fit many Golf/Jetta models. As always your best bet is to match the part numbers with the original. 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.