Sc300 na-t Auto trans...obd1

I'm going to be hooking up an hks vpc soon..
I'm installing 550cc Inj's

My Q is what chip do I need to run? It comes with a 550 chip but I dont know yet if its for mkiii or mkiv ..

With a obd1 car do I have to run the mk3 550 chip? Or could I run either of them?

On the hks site I see mk3 550 chips,mkiv chips,and mkiv auto trans chip ..

What can or can't I run..??
Thanks guys

 

The mk3 GTE has the same type of KVF maf as the odb1 sc300, so i would think thats the chip to use if your odb1.
The mk4 GTE uses a hotwire maf, which is more like the odb2 sc300 mafs.

 

Mk3 550 chip it shall be ..thanks bro