Ls1 obdii

[Doubledip]

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)

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)

[Gaz64]

Ah yes, the PIM interfaces to the rest of a vehicle that can't talk as fast.

[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

[Rob. Smith]

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

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

[boxhead]

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)

Yes, this is what I was saying, just didnt actually say it.
I kept my answer to short.