Used engine computer (ECU) at the junkyard, car by car

Under the hood, or under the car.

A used engine computer (ECU) is priced on 611 generations across 294 nameplates, listed below by make and model. Open one for the asking price on that car and what else the part fits.

What to bring for it

8, 10 and 13 mm sockets with extensions
Torx T20 and T25; some sensors use the tamper-proof kind with a pin in the middle
Phillips #2
A small flat screwdriver for connector locks

Typical sizes, not a promise for every car. Everything to bring to a pull-your-own yard.