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Just out of interest at what revs does the cutout operate on the 2 litre twinspark? Its been a while since I have driven the car and I`ve forgotten. I`ve had the head off and modified it making it feel quite a bit more eager right across the rev range but really strong at top end. Engine is CF2 2 litre twinspark in a year 2000 156.
 

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For the 147:​
Control of the maximum rpm
Depending on the rpm reached by the engine, the control unit:
  • over 6800 rpm cuts off the supply to the injectors (it is permitted to reach a maximum of 7200 rpm for a maximum of 3 secs).
  • under 6800 rpm resumes driving of the fuel injectors.
 
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