TonyK
True Classic
As I have stated the Fiat 500 Abarth engine installed into the Fiat X1/9 is really two entities.
The issue that presents it's self is that the Abarth engine uses an ECU with 5 volt CAN signals and monitors the wiring of the engine and most of the car. The engine oil pressure switch falls into this problem. Although both the X1/9 and the Abarth engine have a closed pressure switch that opens between 7 and 10 PSI and the signal goes to ground attaching the 12 volt light bulb circuit to the can circuit can and will cause problems. The solution can be resolved in one of two ways. One way would be to use the stock pressure switch to close a double pole 12 volt relay that opens when oil pressure is obtained and breaks the 5 volt CAN bus Signal on one pole and opens the 12 volt dash light circuit on the other pole. A bit of wiring and a relay would have to be added. There is a fair bit of wiring to be done on this car with out this and I wonder how the K20 resolves this similar issue. The other way is to make a TEE fitting that will allow both of the pressure sensors to be installed. As luck has it with this platform space is limited so I made a custom TEE fitting that uses a banjo bolt and allows both pressure switches to be mounted in the oil pressure galley.
Here is the You Tube Link. This part will be installed on Bob Martin's engine.
https://youtu.be/7uXW5b-zVgU
TonyK.
Grimsby Ontario Canada
The issue that presents it's self is that the Abarth engine uses an ECU with 5 volt CAN signals and monitors the wiring of the engine and most of the car. The engine oil pressure switch falls into this problem. Although both the X1/9 and the Abarth engine have a closed pressure switch that opens between 7 and 10 PSI and the signal goes to ground attaching the 12 volt light bulb circuit to the can circuit can and will cause problems. The solution can be resolved in one of two ways. One way would be to use the stock pressure switch to close a double pole 12 volt relay that opens when oil pressure is obtained and breaks the 5 volt CAN bus Signal on one pole and opens the 12 volt dash light circuit on the other pole. A bit of wiring and a relay would have to be added. There is a fair bit of wiring to be done on this car with out this and I wonder how the K20 resolves this similar issue. The other way is to make a TEE fitting that will allow both of the pressure sensors to be installed. As luck has it with this platform space is limited so I made a custom TEE fitting that uses a banjo bolt and allows both pressure switches to be mounted in the oil pressure galley.
Here is the You Tube Link. This part will be installed on Bob Martin's engine.
https://youtu.be/7uXW5b-zVgU
TonyK.
Grimsby Ontario Canada