2ZR Turbo Yaris

[06YarisRS]

I used the engine control diagrams I got from TIS for the 2008 Scion xD. Also attached is a pic of the 2ZR Engine Control I found online and a link to the F/IC wiring diagram. Please chime in if you see anything amiss or have suggestions. I will add the diagrams for the power supply and ground for the F/IC later.

Interestingly, the tuner with whom I was speaking said that it would be unnecessary for the F/IC to control camshaft timing and that the stock ECU would control that. He seems very knowledgeable, but this just seemed odd to me. I suppose though if it is true and the F/IC is not controlling timing, that the crank would not need to be connected either.

AEM F/IC Manual:

https://www.jegs.com/InstallationIns...17-30-1913.pdf

[atomic_hoji]

Originally Posted by 06YarisRS

...
Interestingly, the tuner with whom I was speaking said that it would be unnecessary for the F/IC to control camshaft timing and that the stock ECU would control that. He seems very knowledgeable, but this just seemed odd to me. I suppose though if it is true and the F/IC is not controlling timing, that the crank would not need to be connected either.
...

Sorry, hadn't replied regarding the wiring diagrams you posted.

From a quick read through the FIC install manual, at a glance it looks like you're spot on with the wiring techniques for those sensors. Does the Turbokits installation instructions give a recommendation on where to splice into the wiring harness? And/Or come with a "flying lead" harness to work with?

With respect to the camshaft and crankshaft inputs - my guess is the tuner means that since you are going to be running a fairly mild tune, you can avoid using the FIC to adjust timing and just leave the adjustment to the stock ECM. Might be that more aggressive tunes that adjust timing are also more likely to freak out the stock ECM, leading to the need to reset? (guessing..) I would hazard a guess that you will still need the crankshaft input as that will be how the FIC will get the rpm - fuel map references rpm if I recall.. The tuner should be able to tell you if you need to wire it in or not for sure though.

Good luck! And of course keep us posted.
-- Adam