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How do i bypass unneeded circuits in PCM?

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Old Jan 27, 2011 | 06:45 PM
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Default How do i bypass unneeded circuits in PCM?

hey guys

so im going through putting an lq4 in my 67 camaro and i want to know how i tell the PCM to ignore things like the O2 sensors after the cats, and how to ignore stuff like this that is apparently not needed... how do i do this in HPTuners or EFI Live?

thanks

On the Blue Connector C1

17 - Transmission Fluid Pressure Switch Signal B
18 - Transmission Fluid Pressure Switch Signal C
23 - Low Reference
25 - HO2S Low Signal Bank 2 Sensor 2
28 - HO2S Low Signal Bank 1 Sensor 2
32 - Clutch Pedal Position Switch
34 - Neutral Safety Switch Signal
45 - 5-volt Reference A/C Refrigerant Pressure Sensor
46 - 5-volt Reference Fuel Tank Pressure Sensor
53 - Low Reference Transmission Temperature Sensor
65 - HO2S High Signal Bank 2 Sensor 2
68 - HO2S High Signal Bank 1 Sensor 2
70 - Oil Level Switch Signal
79 - Skip Shift Solenoid Control M/T or 3-2 Shift Solenoid Control A/T

On Red Connector C2

2 - TCC Solenoid
4 - Air Relay Coil Driver
6 - PC Solenoid Valve High Control Sol.A
8 - PC Solenoid Valve Low Control Sol.A
13 - Cruise Control Engage Signal
14 - A/C Refrigerant Pressure Sensor Signal
17 - A/C Request Signal
18 - A/C Compressor Clutch Supply Voltage
20 - VSS Low Signal (???)
21 - VSS High Signal (???)
30 - Fuel Enable Control (Keypass II) (???)
34 - EVAP Canister Purge Solenoid Control
36 - AIR Pump Relay Control
37 - Cruise Control Inhibit Signal
42 - TCC Solenoid Valve Control
43 - A/C Clutch Relay Control
44 - Reverse Lock Out Solenoid Control
45 - EVAP Canister Vent Solenoid Control
47 - 2 - 3 Shift Solenoid Valve Control
48 - 1 - 2 Shift Solenoid Valve Control
50 - VSS Signal (???)
51 - Trans Fluid Temp Sensor Signal
53 - Ignition Retard Signal
54 - Fuel Level Sensor Signal
57 - Fuel Level Sensor Signal
63 - Transmission Fluid Pressure Switch Signal A
64 - Fuel Tank Pressure Sensor Signal
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Old Jan 27, 2011 | 06:52 PM
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I just scrolled through the list of Powertrain diagnostic error codes and disabled the ones I knew would be unused.
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Old Jan 27, 2011 | 07:36 PM
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so if i disable them in the software, can i remove the wire in the harness to clean it up?

if its disabled in SW, then i shouldnt have to tie anything to BATT or GRND, right?

thanks!
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Old Jan 27, 2011 | 07:50 PM
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Originally Posted by jks67ss396
so if i disable them in the software, can i remove the wire in the harness to clean it up?
Absolutely, just be careful and certain of which wires you're removing. Personally I'd get it running first, then go back and clean up the harness.

Originally Posted by jks67ss396
if its disabled in SW, then i shouldnt have to tie anything to BATT or GRND, right?
You will have a hard time getting it to crank and run with nothing powered and grounded.
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Old Jan 27, 2011 | 08:02 PM
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ha

yes, i just meant that i wouldnt have to tie unused wires to batt/grnd

thanks!
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