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I just thought I would post this up for anyone looking to run a different ecm, or a key has been lost and you dont want to pay dealer to program a new key.
Also maybe wanted to try a key like this one but couldn't because of the immobilizer. Now you can. JDM Honda Remote 3 Button Flip Key Fob w Type R Red H Logo Civic EK EJ Em Accord | eBay
Now you can actually remove the immobilizer chip from the ecm by desoldering or cutting chip off the ecm. Doing so will actually allow you to run un-programmed key or different ecm with no immobilizer (green key dash light) but it will throw a code I cant remember but I believe it was a po1637 code. Another con is a few second delay start on key turn *quite annoying*. So if you dont mind check engine light and delayed engine crank on key over then this solution will work just fine for you.
Another option is to buy this immobilizer bypass chip for $26 bucks. Immo Emulator for Honda Cars 1999 2001 Kill Bypass Immobilizer Replace Lost Key | eBay
It ships from China and suprisingly it arrived in a week.
To install you have to de-solder the original immobilizer chip and add this one in its place. I chose to de-solder the pins from the oem chip and solder to the immobilizer bypass chip to easy installation but you could use head pins or wire too.
With the bypass installed everything works perfectly no delay on key turn no check engine lights no immobilizer light.
Also before I tried the bypass chip I tried actually removing the oem immobilizer chip from my original 345 ecm and then swapped it into the 505 ecm. This actually wouldnt turn the car over and gave a green immobilizer light.
Also maybe wanted to try a key like this one but couldn't because of the immobilizer. Now you can. JDM Honda Remote 3 Button Flip Key Fob w Type R Red H Logo Civic EK EJ Em Accord | eBay
Now you can actually remove the immobilizer chip from the ecm by desoldering or cutting chip off the ecm. Doing so will actually allow you to run un-programmed key or different ecm with no immobilizer (green key dash light) but it will throw a code I cant remember but I believe it was a po1637 code. Another con is a few second delay start on key turn *quite annoying*. So if you dont mind check engine light and delayed engine crank on key over then this solution will work just fine for you.
Another option is to buy this immobilizer bypass chip for $26 bucks. Immo Emulator for Honda Cars 1999 2001 Kill Bypass Immobilizer Replace Lost Key | eBay
It ships from China and suprisingly it arrived in a week.
To install you have to de-solder the original immobilizer chip and add this one in its place. I chose to de-solder the pins from the oem chip and solder to the immobilizer bypass chip to easy installation but you could use head pins or wire too.
With the bypass installed everything works perfectly no delay on key turn no check engine lights no immobilizer light.
Also before I tried the bypass chip I tried actually removing the oem immobilizer chip from my original 345 ecm and then swapped it into the 505 ecm. This actually wouldnt turn the car over and gave a green immobilizer light.


