Kevin's got it.
I believe the fd3 RX7's come stock with sequential turbos.

Compounds feel more linear once they are setup correctly.
When I had the small turbo set on stock wastegate pressure and the large turbo set around 20ish, the small one spooled instantly, then there was a bit of lag, then the larger one started screaming and kicking in, which was cool, but not ideal.

You want both of them working in their efficient range, and the boost patterns to overlap.

My tuner said that he was having to edit parts of the VE table that he never had to pay this much attention to, or sometimes ever edit.

I am running evo8 ecu with ecu flash and evoscan.
I can try and find an old log though. I believe it was 20psi before 3000.