Stock OEM used ECU from a US-market 2000-2001 Toyota Celica GTS 6-speed.
This ECU is the best one for 2ZZ MR2 Spyder swaps because it is designed for the cable operated throttle and it has the higher 8250rpm rev limiter and lower 6000-6200rpm VVL change point. It can be plugged in to the stock MR2-S harness with some modifications or can be used with no wiring changes if you purchase the MWR plug n play adapter. This ECU does not have an immobilizer so you don’t need to worry about programming keys. It does have fully functional OBD2.
This ECU is also an excellent upgrade for the 2002 Celica GTS which had the lower 7800rpm rev limiter. You must also swap to the 2000-01 style knock sensor.
As with all electronic components, returns are not accepted for this item. Exchange or repair only in case of a problem.