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09-19-2010, 12:49 AM
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CC Member
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Join Date: Feb 2002
Location: Alice Springs, central Australia,
NT
Cobra Make, Engine: Classic revival kit (CR3181), gen III engine, T56 6 speed box, AU XR8 lsd diff
Posts: 5,699
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Not Ranked
Gary, there is no PIM needed in the LS1 Cobra, unless your running secondary systems from Commonwhore (ABS, Dash etc)
The serial data wire goes directly from ecu to the OBDII connector (not through PIM)
__________________
Cruising in 5th
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Never be afraid to do something new, Remember, Amateurs built the Ark: Professionals built the Titanic.
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09-19-2010, 03:33 AM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,797
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Not Ranked
Quote:
Originally Posted by boxhead
Gary, there is no PIM needed in the LS1 Cobra, unless your running secondary systems from Commonwhore (ABS, Dash etc)
The serial data wire goes directly from ecu to the OBDII connector (not through PIM)
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That's handy to know, thanks for the info. 
Commonwhore (ha ha, I'll have to remember to use that now and then, tongue in cheek)
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Gary
Gold Certified Holden Technician
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09-19-2010, 04:27 AM
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CC Member
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Join Date: Apr 2007
Cobra Make, Engine:
Posts: 102
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Not Ranked
Quote:
Originally Posted by boxhead
Gary, there is no PIM needed in the LS1 Cobra, unless your running secondary systems from Commonwhore (ABS, Dash etc)
The serial data wire goes directly from ecu to the OBDII connector (not through PIM)
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even in a commodore with the PIM in place the scan/flash tool is still connected directly to the PCM and not going through the PIM so there is no speed difference whether programming on bench with PCM alone or in a car (with or without PIM and other devices)
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www.ultimateconversionwiring.com.au
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09-19-2010, 04:53 AM
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CC Member
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Join Date: May 2008
Location: Brisbane,
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Cobra Make, Engine:
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Ah yes, the PIM interfaces to the rest of a vehicle that can't talk as fast.
__________________
Gary
Gold Certified Holden Technician
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09-19-2010, 06:32 AM
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Senior Club Cobra Member
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Join Date: Mar 2007
Location: North Gold Coast,
Qld
Cobra Make, Engine:
Posts: 820
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Not Ranked
its not really the speed that is the problem
ls1 ecu is usa language
commodore dash is aussie language
pim is there only on v8s to convert serial data from ls1 ecu
to the language of the aussie dashes and bcms
in usa they dont normally have pims
also obd2 is just name of the plug
this was invented i think by usa decause they got sick of every car that was make or imporeted had a different plug and companies that sell scanning tools had to make new plugs to suit and shop owners got the sheits
so they said look we want to standardise the diagnostic plug
there is still 4 or 5 different lanquages in the obd2 depending on car maker
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09-21-2010, 03:45 AM
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CC Member
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Join Date: Jun 2006
Location: Newcastle, Warners Bay,
NSW
Cobra Make, Engine: RMC . 393 Dart alloy block Stroked 351 alloy heads ..all the goodies plus a pre oiler. al
Posts: 1,495
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Not Ranked
Quote:
Originally Posted by sideshow
its not really the speed that is the problem
ls1 ecu is usa language
commodore dash is aussie language
pim is there only on v8s to convert serial data from ls1 ecu
to the language of the aussie dashes and bcms
in usa they dont normally have pims
also obd2 is just name of the plug
this was invented i think by usa decause they got sick of every car that was make or imporeted had a different plug and companies that sell scanning tools had to make new plugs to suit and shop owners got the sheits
so they said look we want to standardise the diagnostic plug
there is still 4 or 5 different lanquages in the obd2 depending on car maker
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Here's a question....What's the difference between OBD1 & OBD2....just the plug ? Because I want to buy a diagnostic reader but have an OBD1 car as well as an OBD2 |
09-19-2010, 04:22 PM
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CC Member
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Join Date: Feb 2002
Location: Alice Springs, central Australia,
NT
Cobra Make, Engine: Classic revival kit (CR3181), gen III engine, T56 6 speed box, AU XR8 lsd diff
Posts: 5,699
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Not Ranked
Quote:
Originally Posted by Doubledip
even in a commodore with the PIM in place the scan/flash tool is still connected directly to the PCM and not going through the PIM so there is no speed difference whether programming on bench with PCM alone or in a car (with or without PIM and other devices)
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Yes, this is what I was saying, just didnt actually say it.
I kept my answer to short.
__________________
Cruising in 5th
---------------------------------------------
Never be afraid to do something new, Remember, Amateurs built the Ark: Professionals built the Titanic.
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