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
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.
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.