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Old 10-21-2009, 09:43 AM   #1
thewerxracing
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Default 2.0 heads on a 2.5 block- what else?

I figured this was asked frequently...

I just got several 08wrx long blocks. I want to use a bottom end from one in my bugeye.

Would I need a new ecu and everythin or will the rest of my motor bolt on?
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Old 10-21-2009, 02:25 PM   #2
thewerxracing
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Really? No one knows if you can retain the Stock ECU and just tune it?
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Old 10-21-2009, 02:27 PM   #3
Agkelos
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Which parts are you wanting to swap into your car? Sorry I was confused.
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Old 10-21-2009, 02:37 PM   #4
Byzantium
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ECU is determined by the heads.
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Old 10-21-2009, 03:47 PM   #5
thewerxracing
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Nice. So I'm sure it will needed to be tuned, but that's about it.
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Old 10-21-2009, 05:02 PM   #6
the suicidal eggroll
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Quote:
Originally Posted by thewerxracing View Post
Nice. So I'm sure it will needed to be tuned, but that's about it.
Right, 2.0 to 2.5 hybrid setup requires no change in the ECU, just a new tune.
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Old 10-21-2009, 05:06 PM   #7
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better head gasket.
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Old 10-22-2009, 12:34 PM   #8
rckcrawler
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I am glad you asked this question. I have the same setup sitting at my sisters house. So if I was reading this right I need the wiring harness for the 2.0 and the ecu, correct? Also the DOHC heads take coil packs right?
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