Hi, i am a new member and looking for some help here on replacing ecu. i am planning to put in a 03 ecu to my 00 s2000. i have read some posts in the forum ,and noticed that i need to take my car back to the dealer to get a new key. i was just wondering if that means replacing the immobiliser ? and not the key ?
so if i am not using the stock alarm&immobiliser, i do not need to go back to the dealer ?

thanks ! sorry if i asked a stupid question, i am a newbie to this.

 

you need the vin# from the new ecu, then take your car to honda with your new pcm and all your keys your your S and they can do it there. cost like $150, just had mine done.

 

hi, yes i know i need the VIN and get the keys back to the dealer to reprogram. i was asking what if i am not using the stock immobiliser ? do i still need to reprogramm the keys ? or the immobiliser is sticked inside the ECU ??

 

Its inside the ecu

 

did the same earlier. Your car keys, Vin number, Vin number of the 03 model car, new ECU and thats it.