Actually i bought it from parts411.com but even they dont have any information in english and they dont know how to install it... the strange think is that , they produce the product and sell it in USA and dont know how to use it
I will email greddy direcly to demand english instructions soon.
and the limit is 120 mph(188kmph) not 188 mph
i am not sure about the type of the ECU but my 2000 celica GTS kicks 197 bhp in dyno and it is import from japan.. the only problem is it comes to 188 kmph immediately in 4th gear and electric cut at that speed. 5th and 6th gears are only for overdrive
i am planning to solve that speed limitation with greddy speed cut limitor.