Originally Posted by jason miller
Really, the stock ej205 heads/cams aren't designed to make a lot of top end. Pretty much any setup is going to taper a bit up top, unless you're running such a big turbo that it's not fully spooling until almost redline.
heres a link to my thread.... product of stock ej205 heads on ej257block/hta68 8cm
im losing 15hp up top more than what id like.. it be nice to hold 300 to redline......at least.
im buying some ej205 heads and boring em out on the side.. 272 cams ontop of that.. aiming for 350awhp.. made 320 with my stock heads a month ago hta68 8cm.. =D