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Anyone who knows about tuning/diagnostics?

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Old Mar 19, 2005 | 02:54 PM
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Default Anyone who knows about tuning/diagnostics?

Alright the car has been getting 200 miles per tank while driving light, this is combined city and highway driving. I have no internal upgrades or anything that should be hogging more gas. I let the car get to its operating temp and wrote down all the results from the scanner :

Baro (HG) - 28.15
LT Fuel Trim - ON
LT Fuel Tr CL - 5
LT Fuel Trm L - 115
LT Fuel Trm R - 116
CC on/off sw - OFF
EVAP DUTY - 0%
EGR DUTY - 0%
Coolant - 185* (this is the hottest the car gets)
IAC Position - 29
Inj L PW - 0 MV
Inj R PW - 0 MV
ST Fuel Trim L - 124
ST Fuel Trim R - 124
Knock Ret - 0*
Knock Sensor - 20
Loop - Closed
MAF (GR/SEC) - 8
MAP - 1.27 V
IAT (F*) - -40
O2 Right - 100-900 MV
O2 Left - 100-900 MV
Spark Advance - 19*
TPS - 0.65 V

These results came from an Actron scanner and this is on a 95 LT1 during idle. I see there is no reading for Pulse Width Modulation on either side so I tried the scanner on a friends 95 LT1 and he is only getting a reading from 0-4 on the right side, the left side stays at 0. Also his MAP voltage is 1V higher then mine. Its not cammed and doesn't have ported heads and it's not blown so I don't know why it would be using more fuel? It does have an aftermarket fuel pressure regulator but at idle the PSI was correct at 40psi, I haven't tried it under a load since no one was around to help me and now I lost the fuel pressue gauge. Any help would be MUCH appriciated. Maybe Slowhawk will get LT1 edit and solve my problems?
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