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D14A5 75hp to 90hp
Posted: Wed Aug 29, 2018 12:04 am
by headkpa6
Hello, help please. You want to make d14a5 from 75hp to 90hp. Cut a gasket, but what about the ECU? Is it necessary to change the ECU in this case? I have ECU from d14a2. Different fuel maps in these ECU? 37820-P1J-e11 from d14a5 and 37820-P1J-e00 from d14a2. Thank you!
Re: D14A5 75hp to 90hp
Posted: Wed Sep 12, 2018 11:53 am
by Marko14
You don't have to change the ECU.
Take the car for a drive and warm it up, then go back to garage, while the car is on turn off all things electrical, headlight, car stereo, cabin light etc.
Turn the car off and take off the negative battery wire and leave it like that for 20 minutes. Then put the negative battery wire back on and turn on the car and let it idle for 10 minutes, dont touch the brake or turn on light or anything electrical and most importantly dont touch the throttle. After 10 minutes turn the car off and then turn it on and you're done.
Its a procedure to reset the ECU and erase fuel map that the ecu has learned over time for the 75 hp engine. It will take a tank of gas for your ecu to completely learn the new map. You should have a properly working O2 sensor for the map to be correct.