this is what i recommend to reset the ECU.
1) start the car without pressing the gas and run for 5 minutes or until it idles.
2) turn off the car
3) disconnect the negative terminal of the battery
4) wait about 5-10 minutes
5) reconnect the negative side of the battery
6) restart the car without pressing the gas and let it idle.
i recommend that you reset your ECU each time you get a performance mod, especially if it regards to Air, Fuel, and spark. resetting the ECU will allow for compensation with the upgrade. it is NOT NECESSARY, but i do recommend.
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