i have a 91 teg da,is it obdo or obd1?how do i tell?

 

obd0

 

Obd-0 unless it was converted to Obd-1. Looking at the fuel rail is the only way I know to tell.... but that rail alone could of been swapped to obd1 without the whole car being swapped. If the car is stock though its more then likely obd0 as stated above.

 

if its obd0 it will have a red light pn the ecu......if not its 0bd1..........no fuel rail mod is necessary at all

 

The fuel rail has nothing to do with the OBD generation.

The ECU is what dictates the OBD generation, along with some of the emissions stuff on the engine (like differences in purge control, O2 sensors, etc). OBD stands for "On Board Diagnostic", and all those diagnostics are controlled by the ECU. Because you can use different OBD ECU generations with the same engine configuration, you can't tell by looking at engine parts. For example, you could take an engine from an OBD2 car, and put an OBD1 ECU on it, and because the OBD1 ECU only holds to the OBD1 standard, it's now an OBD1 engine. It's still an OBD2 generation engine, but it's only being controlled to OBD1 standards. Does that make sense, sort of?

So anyway, take a look at the ECU, that's how to tell. You can identify what generation it is by the connectors on it. Here's a nice picture I just found with Google, that should help you out:

 

Huh well one again I fail.. but what I ment was that was the only way I knew to tell... but I also stated that was a VERY poor way to go about it (in so many words). I guess I should stay my ass ouch of tech section :-p

 

thaks,its obdo.should i chip my obdo, or convert to obd1 n go from there?

 

.

 

What are you trying to do? THere isn't any reason to convert to OBD1 unless there is a reason that you need to get tuned and your ECU isn't able to be chipped. There really isn't any reason to convert to OBD1 unless you actually have a need for it, because an OBD0 ECU can run your engine just as well as an OBD1 ECU.

 

i have a turbo set-up,and will need to get car tuned when i install it,just wondering if one was better to tune than the other?i already have an obd1 ecu tuned on chrome that came with it