I've put a 24 kOhms resistor on two wires of the MAP sensor, the earth and the built-in IAT.
Hence Torque is telling now that the intake temperature is -29°C, which facilitate the acceptance of more ethanol by the engine.
But the ECU being a bit touchy, the surgical job just being done, when I tried to start, all the instrument pack lights switched off straight away and nothing happened, the engine was like dead!
I had the idea to take off the negative of the battery, wait a few minutes then on again, but I hadn't any spanner at hand.
Then I thought it might be the fob, so I went back to the house to get the other one.
Thus I put the second key in the hole and all was working again, but the trip counter that had been reinitialized in the meantime.
When I tried to connect that nasty German Sat-Nav CD reader in the first place,
https://forums.mg-rover.org/mg-zt-rov...ml#post8654761 the ECU had done the same trick while reinitializing itself.
So all's well that ends well!
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Rover 75 V6 2.5 Auto Connie born 1 July 1999, 24 kOhms resistor, 10 kOhms manual starter, full E85, modified airbox, full derestricted SS exhaust line, power & torque remap -> 202 bhp
- This vehicle was the 7,517th 75 to run off the production line, out of 112,381
- This vehicle was the 1,190th 75 2.5 V6 Contemporary to be made out of 8,214
- This vehicle was the 2,032nd 75 in Atlantic Blue Pearlescent (code: JEY) to be made out of 2,572 Atlantic Blue Pearlescent 75s