Spectre ProFab High-flow Cold-air Intake: GM Light- and Heavy-duty Trucks

For GM light- and heavy-duty trucks there is a new Spectre ProFab high-flow cold-air intake. It has a mandrel-bent, polished-aluminum intake tube, a washable, reusable cotton filter, and a powdercoated heatshield to block high underhood radiant heat. All of this equals more efficiency and better power for towing, hauling, or everyday driving. It'll fit 1999-2006 4.8-, 5.3-, and 6.0-liter engines and costs about $167.

Spectre Performance

Summit Racing Diesel Exhaust System: Most 2001-2004 Chevy/GMC, 1999-2003 Ford, 1999-2002 Dodge Trucks

You probably recognize Summit Racing's name as a supplier of aftermarket parts, but this aluminized diesel exhaust system is from the company's own line. You can get a four- or five-inch downpipe for enhanced pulling power at highway speeds and use an actual diesel muffler to resist clogging. The systems will fit 2001-2004 Chevy and GMC three-quarter- and one-ton extended and Crew Cabs with the 6.6-liter, 1999-2003 Ford trucks with the 7.3-liter, and 1999-2002 5.9-liter-equipped Dodge Rams. The four-inch-diameter systems run about $300; the five-inchers are around $400.

Summit Racing

Superchips Racing Diesel Tuner: Power Stroke

If you've bought a pickup, chances are good it's because you need it for tow/haul mode, but you might also venture to the dragstrip, and Superchips Racing offers the diesel tuner for those of you opting for a little more play than work. Designed for the 2008-2010 6.4-liter, 1999-2003 7.3-liter, and 2003-2007 6.0-liter Power Stroke, it offers five power levels, wheel/tire and gear adjustment, speed and rev-limiter adjustment, shift-pressure adjustment, diagnostics, and monitoring. You'll be able to tune out an overly sensitive pedal, engine surge, and abrupt shifts.

Superchips Racing