Hi, I own a '96 850 Turbo that I purchased new and it has been well maintained and serviced at the regular scheduled intervals. The car has approx 129,000 miles and has been running very well.
Approx, three months ago, I purchased the upgraded performance ecu from IPD. When I installed the unit, the difference was immediate and like night and day.
Recently, I have noticed that the car does not accelerate very strongly and seems to be like it has the stock ecu. My independent mechanic has checked everthing on the car. He recently replaced the fuel pump in the tank and that seemed to help for a while.
One of the mechanincs said that it seems like the car is starved for fuel and under acceleration that there appears to be a "fuel cutout" that is occuring.
Any advice or suggestions that anyone on Brickboard has that may have had a similar situation that they were able to fix would be greatly appreciated.
Thanks, Fred.

850 Turbo's are notorious for vacuum leaks and turbo line leaks that can adversely impact performance.

Replace all turbo hoses and vacuum lines.

Fuel filter also replaced? May have losened some debris in the tank to partially block filter. Just an idea--------easy to change--

dick