tcart

i have a 1992 camaro rs the lo3 (305 tbi), i have an lb9 (305 tpi) engine i want to swap in. i have the wiring harness i just dont have the ecu. will the ecu that is currently in the car work with the new engine or will i have to buy a new ecu for the engine swap?

Tuned Performance

iTrader: (92)

If your going tpi yes you will need a 1227730 ecm. Sticking with the lo3 you can use the same ecm but timing could be improved with a custom burned prom.

tcart

yes i do plan on switching to the tpi, the motor is almost ready to go in, i just wanna make sure i have anything i need to do the swap before i pull out the stock motor.

Tuned Performance

iTrader: (92)

You also need a memcal, the code axxb for a lb9 automatic is still available.
Acdelco 16163062. If you have issues finding a memcal send me a pm I have a few.

tcart

thanks, you have been very helpful. ive looked around a little and i have found some memcals. once the car is finished i would like to have my car tuned, i am not very knowledgeable with the tuning of obd1 vehicles but i understand that they have to make a custom chip? do you by chance know where i could have a chip made for my car.

Tuned Performance

iTrader: (92)

I can assist on the tuning. Feel free to send me a pm.

Tuned Performance

iTrader: (92)

I was just guessing the lb9 was 90-92 if it's a speed density it uses the 1227730 ecm you will see two black connectors for the ecm and one green or yellow. If you have a maf harness you only have two plugs for the ecm. Tpi maf 86-89 uses a 1227165 ecm.