question about trigger of fa20 engine

Hi guys,

I am using ECUmaster pro8 ECU to tune my 2013 brz fa20 engine, and I have trouble to configure the triggering part.

In the tuning software, there is a primary trigger and a secondary trigger option, the primary one I figured I should use 36-2-2-2 Subaru EZ engine pattern, is that correct?(first question) And for the secondary trigger, should I use this? If so, the intake camshaft on LH side should be the one to provide signal right? But which pattern should I choose? There are N-1, N+1, 1 tooth and so on.. I have watched the signal output of the cam, but I don't know which pattern fits the signal, please help guide me with all these settings, thanks.

Notes I have on that engine indicates it has a 4-1 tooth trigger on the inlet camshafts. Should be hall-sensor rising edge on Bank 1 (the one with the cylinder #1)

Thanks a lot David! So I should choose the N-1 pattern, right? Another question is because I also have the Emtron plug in ECU for brz, it uses intake LH which is on bank2 for sync sensor, so if I choose the N-1 pattern, which camshaft should I choose to be sync sensor? The one on LH or RH? Mine is a left hand drive car.

From a quick google search, an ebay crank trigger for sale from 13 BRZ looks similar to an STI. They aren't identical but the double -2 and single -2 sections at a glance appear in similar placement to an STI and it counts as a 36 tooth.

As a general note, left vs. right hand drive does not impact the left and right hand side of the vehicle, or engine triggering.

Bank 2 intake is usually used for sync on this, but if you have to set everything up manually and ECUMaster doesn't have any sort of pre defined Subaru sync, VVT setup for this engine, then technically I don't see why you couldn't use bank 1. Perhaps David had to do a full custom setup and that's why he ended up using bank 1.

If I remember correctly the gen 1 BRZ engine shares triggering with EJ20x/y quad VVT engines just in case there's a built in setting for that and not your engine.

Also, I'm glad you mentioned FA20 and BRZ, because the WRX FA20 has different triggering.

Thanks for the information, I think the problem is solved, thanks Mike.