GTSHolgi
Viper Owner
Greetings,
I have a 98 RT/10 with 14700 miles on it. Have the car since May, running fine until now, no issues. Stock except for KN filters and smooth tubes.
I recently bought an OBDBII scanner to just play around a little with the data PCM is providing. Did a live capture while driving. After reading the captured data, I noticed, that there are constant differences of the fuel trim values (short and long term) between fuelsys 1 and fuelsys 2. Also the values deliverd by the O2 sensors (B1 and B2) are different. Here's a sample data set:
DTC_CNT 0
FUELSYS1 CL
FUELSYS2 CL
LOAD_PCT(%) 6.3
ETC(°C) 94
SHRTFT1(%) -1.6
LONGFT1(%) -2.3
SHRTFT2(%) 0.0
LONGFT2(%) -4.7
MAP(kPa) 61
RPM(/min) 686
VSS(km/h) 0
SPARKADV(°) 10
IAT(°C) 38
TP(%) 16.5
O2S B1S12--B2S12--
O2B1S1(V) 0.060
SHRTFTB1S1(%) 0.0
O2B1S2(V) 0.940
O2B2S1(V) 0.040
SHRTFTB2S1(%) 1.6
O2B2S2(V) 0.080
OBD OBD&OBD2
Now my question is: are these differences normal or shouldn't be the figures of both fuelsystems the same? Have stock cats and exhaust (still )...
Thanks for your comments!!
Holger
I have a 98 RT/10 with 14700 miles on it. Have the car since May, running fine until now, no issues. Stock except for KN filters and smooth tubes.
I recently bought an OBDBII scanner to just play around a little with the data PCM is providing. Did a live capture while driving. After reading the captured data, I noticed, that there are constant differences of the fuel trim values (short and long term) between fuelsys 1 and fuelsys 2. Also the values deliverd by the O2 sensors (B1 and B2) are different. Here's a sample data set:
DTC_CNT 0
FUELSYS1 CL
FUELSYS2 CL
LOAD_PCT(%) 6.3
ETC(°C) 94
SHRTFT1(%) -1.6
LONGFT1(%) -2.3
SHRTFT2(%) 0.0
LONGFT2(%) -4.7
MAP(kPa) 61
RPM(/min) 686
VSS(km/h) 0
SPARKADV(°) 10
IAT(°C) 38
TP(%) 16.5
O2S B1S12--B2S12--
O2B1S1(V) 0.060
SHRTFTB1S1(%) 0.0
O2B1S2(V) 0.940
O2B2S1(V) 0.040
SHRTFTB2S1(%) 1.6
O2B2S2(V) 0.080
OBD OBD&OBD2
Now my question is: are these differences normal or shouldn't be the figures of both fuelsystems the same? Have stock cats and exhaust (still )...
Thanks for your comments!!
Holger