Are all haltech ECU's universal ? or i need one specifically for my rx7 ?

 

universal

 

and from looking at everything im guessing i should get the e6x ?

 

Not sure, I've heard they are buggy. I've got the older E6K version.

 

Do not get the E6X. Get the E6k (older, DOS Based), or the new E8.

 

mt8 in aus any good?

 

The ECU is universal but the loom and sensors are specific for your application.

 

^^^ that's if you get a terminated harness. it's very easy to take a universal harness and adapt it to your sensors or mostly you just use gm sensors. nothing to it. we've taken haltechs from subaru's and made them work just fine.