if you are putting the k20a into a new honda that has an immobilizer, you need to have the car chipped by the dealer if you are using a stock type s motor for example... in a 2003 civic. But I assume you are asking for an EG. No need for that on an eg. The type s ecu will not work unless, you k pro it and you sent it to hondata to get it flashed. Another option is to use the JDM ecu but that has a speed limiter at 120 mph and it really works well with a k20a type r engine... WIth a type s motor, it is not going to bring the best results. It will run though.
The easiest thing to do would be just get Hondata K-Pro. You can turn the immobilizer off that way you can just use your key and ignition thats already in your car. I believe its a grand to get it. You can also tune your engine in any way with it.
i probally missed it but...im guessing i would need a base rsx ecu? what if i can get the original key? i would just have to buy a starter for it?...sorry if im askin dumb questions i need 2 know where i stand.
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