Morning Overview on MSN

Shorty headers on a 5.7 HEMI: How much HP do you really gain and at what cost?

On a 5.7 HEMI, shorty headers promise easy bolt-on power without turning your daily driver into a race-only project. The real question is how much horsepower they actually add compared with stock ...
Motor Trend

The Correct-Sized Headers Will Give You the Best Performance

What is it about exhaust scavenging, headers, and systems that leave us in a perpetual fog? Shorty ... medium ... long-tube? Pipe size? What collector type? Which is ...