Stock OEM used ECU from a Japanese market (JDM) 2000-2005 Toyota Celica GTS 6-speed manual.
This ECU comes from the 190ps rated Japanese market 2ZZ Celica. It is designed for 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 (same as US market Celica ECU) 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 NOT have OBD2 functionality so it will not pass US emissions tests.
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. Plugs right in to 2000-01 US Celica GTS, no modifications needed. Does not work in US model 2003-05 GTS with electronic throttle.
As with all electronic components, returns are not accepted for this item. Exchange or repair only in case of a problem.
Info on a hack to make a diagnostic tool (MWR does not provide tech support on this)