OBD1 OBD2 difference?

[Willosi1991]

I want to know the difference about OBD1 OBD2 I know alot people know about this!

 

[YBLEGAL]

Really, it's the type and number of sensors used. As the OBD system progresses, it becomes more "aware". Some feel this makes it more restrictive. It's evolution was directed by emissions standards. Are you trying to decide between what motor or chassis to get or something?

 

[Willosi1991]

mmm I have a ls/vtec and I want to make sure what kind of harness I should use obd1 or obd2 also I think I should use a p72 which come obd2 or I can use a p28 which is obd1. thanks for your help.

 

[integraslut78]

It depends on what year the motor is..... I have a LS/VTEC it's a 2001 block with a 1995 GSR head which is illegal but oh well. I am running OBD2 but I have a OBD2 to OBD1 jumper so I can use Hondata.

 

[Willosi1991]

yes the ls/vtec is b18a1 block and b18c1 head.

 

[YBLEGAL]

i've never done an ls/vtec setup, but i would *guess* you use the ECU that's most compatable with the head.