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I'm running the mx-6 ecu and vaf ... runs alright to me.

Legato626 wrote:So after installing the engine would it be safe just to wait for the KL31'36 ecu before driving it?

i would say yes

Well you'd be fine to drive it until you get the parts...it ain't gunna hurt it to run it a bit rich, you just won't get the same performance.

Really it doesn't matter, it just runs really, REALLY rich, so you'll be burning alot of fuel, so don't expect the best gas milleage. If you run it long-term, you'll burn out the cat and your plugs probably won't like it either, but many people have run K8 ECU/VAF combo's, either temporarilly or even for a while because they bought a car that was pre-swapped and didn't know, but either case, I've never heard anyone mention any negative long-term side effects from that setup.

Well so far everything is swapping to the new engine fine so I am good for now. How does the wire harness deal with the ZE are there a few plugs that I am not going to use? And I seen the fuel lines run different to.