Strangely the car is almost all stock. Stock afm, injectors, the whole car... besides the K&N intake and cooleeze catback. I was surprized it would run at 15 psi too. I thought I was supposed to hit fuel cut at 12-13 psi.
black = rich and thats what supras run. i have my own dyno from back in the day that shows the a/fs take a dump after 2750-3000rpms at a sub 10.0:1. get an afpr and take it to a dyno and you can lean it out some.