99 honda civic ek3 lost keys

[skojon]

hello, 2 days ago i lost my one and only keys to my honda civic
its ek3 '99 model with d15z6 block
i predicted something like this can happen so i took picture of key before i lost it and managed to make new one using dremel and 2.5mm steel.
i towed car to my house and now the problem is the immo. i'm electronic hobbyst so i think i can figure it out by myself but i've got few questions
I have P2Y ecu with HIC-RL01 immo module inside. I have read alot about it but im quite beginner at car electronics. Tell me if my thinking is right:
to make it like it was before i have to:
-desolder eeprom from immo module
-read data from it
-calculate key
-put this key in transponder like pcf7935
I dont have any rfid programmer, so my question is:
is it possible to buy transponder like pcf7931 (pre-programmed key), read its key and put data in eeprom to make it valid?
If not, how to calculate key from eeprom data? Do i even need to calculate anything?

I know that i can buy immo emulator but i want to make it as good as it was before.
Will be thankful for any info

[kiszka]

..............

[super jumbe]

Old car don’t waist time, remove ecu and de-solder eeprom 93cxxx put ecu back in the car, START CAR.

[skojon]

transponder PCF7935 and PCF7931 is empty, with a copy EEPROM must do write to the transponder
i thought about PCF7930. But if it is possible, that would be good to make it working with such empty transponder (dunno is it filled with FF's or 00's?) - that would be some kind of protection. Is it possible?

Old car don’t waist time, remove ecu and de-solder eeprom 93cxxx put ecu back in the car, START CAR.
is that really so simple? i read about removing whole immo module but in this ecu this causes problem with fuel trims, check engine turns on and it disables econo light (not sure if it also disable vtec).
Thanks for your reply.

ahh forget to mention; my ecu is p2y-g11 with 12pin immo module

[skojon]

hey its me again
I tried what you said - i desoldered the memory from ecu, when i hit ignition, the starter is running and sometimes engine starts for like half of second and stops
same result when i desoldered whole immo module from ecu

anyone can help? :)

[skojon]

bump pls help