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Discussion Starter · #1 ·
Does anyone have any input on putting d25 heads on a 2017 ej257? Any pros or cons? I’ve been searching for w25 heads but they seem miserable to find. So I figured any input would be much appreciated! Tia
 

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WRX's don't come with W25 heads. That's Dual AVCS and the 11 WRX doesn't have exhaust AVCS, D25 would be fine on EJ257. You may want to use a bit thicker HG since the EJ255 is slightly different than the EJ257 quench area IIRC.
 

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Discussion Starter · #3 ·
I know the wrx’s don’t come with w25 heads.
I bought a 2017 ej257 because I blew up my 255 and my heads are shot in the first place. I was saying I was looking for w25 heads for the 257 but they seem miserable to come across. As to why I asked about d25 on a ej257 because that year sti heads have dual avcs.
 
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