Hi Alan,
as I was told that all the 60 cars will get a new ECU. I hope I´m not talking about any secrets... My old ECU did not fail completely. The following symptoms I wrote to another P4SS owner before I knew that we will get help:
On my Plus4SS I´m not sure if the ECU is ok. The symptoms are not so drastic as with yours. It´s just 90% of the time driving with a loss of power. No smoke, just like a 150 HP engine. When I disconnect the battery and reset the ECU it runs wonderful for about 70 miles with so much power, unbelievable. After this period it becomes weaker again and the engine sounds too fat (more dull, the exhaust not longer like a tombone).
And on 23.03.2012 I wrote in a PM:
Today they changed the ECU. It looks like an equal unit, also Omex. I guess the software is new. Yes, all 60 cars will get a new one. First impression is, the throttle is more spontaneous. Fuel consumption is less. The throttle is more sensitive on the foot. The exhaust end looks more like a nice "dry" dark grey and not longer "gloss" black. Sound is fuller, torque on low revs is stronger...
This was my first impression at this day. Since we made our trip to Merano she has about 2.800 km more on the clock with the new ECU. I only can recommend everyone who has a P4SS to talk with his dealer about swapping the ECU.
In addition, when she was running too fat I had some oil consumption, about 700 ml /1000 km. The new ECU runs more meager (or better said "balanced"), no more oil consumption, not one drop.
