Bolting on a set of headers has long been one of the first moves a hot rodder makes in search of more performance. Traditionally, factory iron log exhaust manifolds are set aside in favor of a pair of ...

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 ...

When it comes to performance, many overlook the backside of the equation, more commonly known as the exhaust. The old adage that what goes in must also come out, should immediately come to mind when ...

Installing headers on a 4.6 Mustang isn't the most fun job in the world. Be prepared to remove accessories and to lift the engine off its mounts to get the job done. Take your time and use the proper ...

If you have the need to peel your face back with speed, Dodge has the answer: the 2010 Viper SRT-10 ACR-X spec racer. It's a track-only, high-output version of the already brutal Viper SRT-10 ACR, and ...