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Old 08-05-2022, 02:45 PM   #1
Pawnstar
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Default 19-20 Sti engine into 15-18 Sti shell

Our 2015 sti just spun a rod and we found replacement engine for a fair price. I know it's a direct swap but will there be any check engine lights? I understand the 19-20 has different pistons and are tuned differently. Would the compression causing any issues for the ecu ? I don't want to rebuild I just want to swap and go.
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Last edited by Pawnstar; 08-06-2022 at 09:03 AM.
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Old 08-05-2022, 03:02 PM   #2
rtv900
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The ECU has no idea what compression a motor has.
It looks for detonation
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Old 08-05-2022, 03:03 PM   #3
rtv900
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The ECU has no idea what compression a motor has.
It looks for detonation
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Old 08-05-2022, 03:54 PM   #4
Pawnstar
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Quote:
Originally Posted by rtv900 View Post
The ECU has no idea what compression a motor has.
It looks for detonation
Should I should be good to go? The rebuild I was quoted is almost the same price as the engine replacement with 7k miles.
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Old 08-08-2022, 06:46 PM   #5
ProjectXT
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It will work fine


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Old 08-12-2022, 10:16 AM   #6
alexu27
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You'll be fine, i did the same swap in my 2006 outback xt.
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