So I bought this perfect version 6 sti, and after about 2 weeks of owning it, i had suspicions that the engine had been swapped. Certain cables were unplugged etc. I didnt care too much because the car ran beautifully.

I had the car (which has walbro fuel pump, 3" hitech TBE, and an autronic ECU) dyno tuned, and it came up with 155awkw.
I found this strange, as other cars with similar mods are pushing 170awkw +

So i decided to check the engine number. The number on the motor is 557409. According to my rego papers, and service manual, it should be 723342. So the motor has been swapped.
The other thing is, I have suspicions this is only a EJ205 motor, (It has EJ20) stamped on it. This would explain the lack of power.
It does have the STi cooler and VF 28 on it.


If anyone can tell me what kind of motor the number 557409 belongs to, ide be real happy. Just trying to determin if its a EJ205, or EJ207

Pictures are attached.

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STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!