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-   -   2015 FA20 into 2013 BRZ Swap Quations (https://www.ft86club.com/forums/showthread.php?t=155283)

alfakarl 03-26-2025 08:59 PM

2015 FA20 into 2013 BRZ Swap Quations
 
I'm installing a 2015 manual FA20 in a 2013 manual car. I've seen conflicting information on if it's plug and play or not and need some definitive answers.

1. Can I simply drop in the 2015 engine and use my original ECU?

2. Do I have to use my original 2013 wiring harness, coils and ECU?

3. What sensors would I need to change out if I use my 2013 harness?

4. Can I use the 2015 wiring harness and my ECU?

5. Can I use the 2015 ECU without programming?

6. Do I need to swap injectors if I use the 2013 wiring harness?

7. Do I need to swap injectors if I use the 2015 wiring harness?

Thanks!

EndlessAzure 03-26-2025 11:20 PM

Everything is plug and play, as long as the engine harness is still attached to the 2015 engine.

alfakarl 03-27-2025 02:35 PM

Quote:

Originally Posted by EndlessAzure (Post 3612916)
Everything is plug and play, as long as the engine harness is still attached to the 2015 engine.

Can I use the original ECU from the 13?

NoHaveMSG 03-28-2025 01:26 AM

Quote:

Originally Posted by alfakarl (Post 3612932)
Can I use the original ECU from the 13?

Yes.

The only difference is if you use the 15’ engine harness and coil packs, you have upgraded coil packs.


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