Previous tests have shown unequal-length short-tube headers are worth around 7 hp on a near-stock 5.0 engine, while equal-length short-tubes typically pick up around 11 hp. Frankly, we were amazed at ...

One of the most distinctive aspects of Subarus is the boxer rumble, thanks to the unequal length headers. The science behind ...

There's just something undeniably thrilling about the sound of a well-tuned diesel engine exhaust. Among all the ways you can upgrade your diesel truck, the exhaust modifications are what give your ...

When it comes to classic hot-rodding tricks, one of the very first things enthusiasts do is modify the exhaust for better sound and performance. The tradition started long ago, in an effort to improve ...

Chrysler has produced the Gen-3 HEMI engine since 2003, and since that time, it has undergone some substantial changes. Beginning with the 5.7-liter HEMI, the Gen-3 HEMI platform soon included various ...