We just received the data on our WRX heads. It took about 3 pairs of heads (2 pairs destroyed
) and many hours of testing at the hands of an experienced (and certified) porting specialist but we finally did it!
We managed to make WRX heads flow about 10 to 15 cfm BETTER than the JDM V8 big port counterparts. With the smaller runner diameters and better flow rates, you will be looking at more flow at higher velocities. Bottom line? Since heads are where most of the top end gains come from these heads will make much MORE power
We will be testing these heads in the upcoming weeks on a stage 2 WRX. Stay tuned!
Here’s some pics:
These particular heads received the Gruppe-S port work with a 5-angle valve job.
Gruppe-S port work with a 5-angle valve job
$1250 labor using your heads
29150 Simms Ct.
Hayward CA 94544
Phone: (510) 783-5300
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