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comptech esm wiring

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Old 06-30-2011, 12:37 AM
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Default comptech esm wiring

sorry guys, i dunno if i should've kept the old thread or not but i got another question.

i found this esm wiring configuration:

Comptech ESM Red Wire (Power) -> ECU Pin 19 Yel/Red Wire
Comptech ESM Black Wire (GND) -> ECU Pin 7 Grn/Wht Wire

Comptech ESM Green Wire (Signal) -> ECU Pin 17 Grn/Red Wire
Comptech ESM Blue Wire (Signal) -> To MAP Sensor Grn/Red Wire

but that didn't specify to cut the map sensor wire. after i found another diagram:

https://www.s2ki.com/s2000/uploads/g...1091513337.jpg

in the second diagram, it said to cut the map sensor wire, is that necessary? and why? and also does it matter which wire is on which end (ecu-->green-->ecu-->blue-->map sensor)?

much appreciated, Thanks!
Old 06-30-2011, 01:43 PM
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Originally Posted by jonkou888
sorry guys, i dunno if i should've kept the old thread or not but i got another question.

i found this esm wiring configuration:

Comptech ESM Red Wire (Power) -> ECU Pin 19 Yel/Red Wire
Comptech ESM Black Wire (GND) -> ECU Pin 7 Grn/Wht Wire

Comptech ESM Green Wire (Signal) -> ECU Pin 17 Grn/Red Wire
Comptech ESM Blue Wire (Signal) -> To MAP Sensor Grn/Red Wire


but that didn't specify to cut the map sensor wire. after i found another diagram:

https://www.s2ki.com/s2000/uploads/g...1091513337.jpg

in the second diagram, it said to cut the map sensor wire, is that necessary? and why? and also does it matter which wire is on which end (ecu-->green-->ecu-->blue-->map sensor)?

much appreciated, Thanks!
In the bold, you are essentially saying the same thing. Make sure to CUT the wire. You are intercepting the signal so the ECU doesn't see BOOST pressure signals. YES, the order matters. Green -> ECU side and Blue -> Map side.
Old 07-01-2011, 04:01 AM
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oh...ok. Thanks for your help!
Old 07-19-2014, 10:52 AM
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Hey I'm lost in this esm sorcery. Does it save me the hassle of needing an aem ems or hontata's ecu??
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