EcuTec

 

If the throttle hang on these cars is screwing you up, try turning off the hill start assist... oddly, it does actually seem to make a difference at speed. Not sure if Subaru did that intentionally for some reason, or if it's just sloppy engineering. Haven't had much issue rev-matching on the track with that turned off.

As for products to auto blip, I am aware of this, but don't have any experience with it: Subaru/Toyota - Blip Module

 

I ordered mine. Will provide some feedback after taking the car to a track.

 

Installing a throttle pedal extender helped me tremendously, since I can just rotate my ankle to use the side of my foot rather than rotate my entire foot to use my heel to downshift.

Something similar to this

Cusco Wide Accelerator Pedal - FRS/BRZ/86 | Kaijumotorsports – Kaiju Motorsports

Cusco Wide Pedal has been specifically designed to make the heel/toe driving technique a little easier for those of you who participate in high-performance driving conditions like auto-x or for weekend track days. Part Number: 965 766 A

kaijumotorsports.store

I would try one of these first since it's gonna be a lot cheaper than a tune

 

My tune through Delicious Tuning using Ecutek has a throttle blip mode that can be used. It is not a real rev match, but simply a blip to get you in the ballpark.
Im not a fan of using driver aids. You are track driving because you want to hone your skills right? Dont use a crutch\handicap. Keep practicing or make some mods (like the pedal spacer mentioned) to help you dial in your technique. To me having the car do the work isnt skill building. Its cheating.

 

I find you really need to stab the gas pedal to get a good rev match, people say the throttle response mods (pedal commander and others) help improve rev matching. I can get it to work fine on my own just by pushing down on the pedal with a bit more authority.

 

I still can't heel/toe but I just give the throttle a hearty boot to rev-match. Often I rev it too much but its better than nothing if I'm at the track, coming into a slow turn, third to second. That's the hardest change match. I even find second-first is easier to match. Maybe try that.

 

That's all you need, heel/toe is over-rated on the street. I don't do it and I'm not particularly good at it either. What works well if you don't heel/toe is doing a double-clutch downshift , with a good stab of the gas pedal.