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 ...

Like you, we've been eagerly awaiting hot rod parts for the exciting new Coyote 5.0-liter V-8 in the '11 Mustang GT. Just about every speed-parts manufacturer we know is busting long hours over the ...

Although the perception is that today's new cars are computer controlled, making it difficult for the do-it-yourselfer to improve his or her car's performance, in actuality today's cars respond to ...

Back in the "good old days" of hot-rodding that most of us have fond memories of, if you wanted to improve the performance of your new car it could be done by simply bolting on the right parts. Using ...