The 524hp 2007 Subaru Impreza STi hits the dyno with equal-length headers, a screamer pipe and raw EJ25 turbo sound. No music ...

I will go to my grave chanting that a Subaru WRX is not a Subaru WRX unless it has unequal length headers. Inefficient? Yes. Who cares? Sounds awesome. But I realize this is very gate-keeping of me ...

So you want a fast car, but you're not looking to drop supercar cash on something so mechanically temperamental as the various apexes of Italian performance. You want 700 horsepower of fun, without ...

When last we left our Project EJ25 build (May '14 issue), we assembled our bottom end using some key components, including Carillo Pro H-Beam connecting rods, JE Pistons, and a Cosworth high ...

It's been a while, but we finally dragged out the Circle Track dyno mule for a new round of testing. This time around the idea came from a bench racing session where we were talking about different ...