E40 PCM - Adjust Fuel Level Values?
10-17-2014, 09:25 AM
#1
E40 PCM - Adjust Fuel Level Values? I have an LS2 and an E40 PCM from a 2006 GTO. I'm swapping it into a 1998 3-Series BMW. I'd like to keep EVAP functional and doing so requires a fuel level input to the PCM.
The GTO fuel level sender generates 240 ohms Empty and 40 ohms Full. This is effectively opposite of what the BMW sender generates - two senders in series each generating 10 ohms Empty and 250 ohms Full for a combined nominal value of 20 ohms Empty and 500 ohms Full. I can lower the BMW's values with a simple resistor but the problem is that they are still opposite of what the E40 PCM is looking for; The E40 is looking for a High ohm value when Empty and a Low ohm value when Full. The BMW sender generates a Low ohm value when Empty and a High ohm value when Full.
Can these values be adjusted in the E40 PCM with HPTuners or EFILive? I found a thread that suggests it's possible in the LS1 computers but I don't know if it's possible in the E40.
Thanks.
Tipsy
The GTO fuel level sender generates 240 ohms Empty and 40 ohms Full. This is effectively opposite of what the BMW sender generates - two senders in series each generating 10 ohms Empty and 250 ohms Full for a combined nominal value of 20 ohms Empty and 500 ohms Full. I can lower the BMW's values with a simple resistor but the problem is that they are still opposite of what the E40 PCM is looking for; The E40 is looking for a High ohm value when Empty and a Low ohm value when Full. The BMW sender generates a Low ohm value when Empty and a High ohm value when Full.
Can these values be adjusted in the E40 PCM with HPTuners or EFILive? I found a thread that suggests it's possible in the LS1 computers but I don't know if it's possible in the E40.
Thanks.
Tipsy
