Diesel Part: PowerMaxCR for the Cummins engine
What It Is: Allows you to adjust horsepower and torque on the fly. Gains in horsepower at the rear wheels can be up to 190 and 580 lb-ft, respectively.
Why It's Cool: It's available with an adjustable remote with digital gauges with settings for maximum power and torque output, EGT, turbo boost pressure, and shut-down idle time.
MSRP: $725 to $849, depending on the application
Where to Get It: TST Products, 812/342-6741, www.tstproducts.com
Diesel Part: South Bend Clutch for Cummins, Power Stroke, and Duramax pickups
What It Is: A hard-core clutch designed to handle serious torque.
Why It's Cool: Preferred by professional sled pullers
Where to Get It: www.southbendclutch.com
Power Programmer for the Duramax: Plugs into your OBD II port and reprograms the computer for 50, 75, 95, or 150 more horsepower. MSRP is $399. Info: ACCEL, 216/688-8300, www.mrgasket.com.
Cool Air Dam intake system for the Duramax: The main focus of the system is a 1,600-cfm SynthaFlow filter that breathes through a specially designed intake tube constructed from cross-linked polyethylene for heat resistance and improved airflow. You'll probably find it for around $300. Info: Airaid Filter Company, 800/498-6951, www.airaid.com.
Dual and single exhaust: Available in T304 stainless steel (or value-priced T409) and comes ready to install. Runs $489-$1,493. Info: ANSA Automotive, 800/777-ANSA, www.ansaautomotive.com.
Arc-flow Ram intake manifold: The shrouded backside has an embossed area into which gauges and other inputs can be tapped. Starting at $325. Info: ATS Diesel, 800/949-6002, www.atsdiesel.com.
Banks Brake: Computer-controlled exhaust brake that offers engine braking for diesels; it closes a valve on the exhaust stream, which makes exhaust back up in the engine, slowing it. Prices vary per make and model, but it starts at $912.45. Info: Gale Banks Engineering, 877/227-5648, www.bankspower.com.
Single turbo kit for the Cummins: Includes all exhaust, intake, and oil adapters, and reduces smoke emissions and exhaust temps at peak load levels. Starts at $1,245. Info: BD Diesel Performance, 800/887-5030, www.dieselperformance.com.
Power Pup Downloader for the Power Stroke: For more power, especially for towing, it includes 10 settings, removes the speed limiter, and stores and erases trouble codes. Can be adjusted on the fly when combined with the Outlook Monitor. $549, and for the combo, it's $849. Info: Bully Dog Technologies, 208/397-3200, www.bullydog.com.
Jammer BB Turbocharger for Cummins: Uses ceramic ball bearings said to make for fast spool-up. Increases the airflow to keep the EGT down during towing. Pricing is $1,650 for '94-'02, $2,000 for '03-'05 with downpipe-included system. Info: Edge Products, 888/360-3343 or 801/476-3343, www.edgeproducts.com.
Turbo-Back Exhaust for Cummins: System includes a 7-inch-round muffler with a free-flow perforated core for an aggressive sound. Single and dual outlets feature 4- to 5-inch slash-cut tips. Cost is $530-$799. Info: Flowtech, 800/HOLLEY-1 or 270/781-9741, www.flowtechheaders.com.
Diesel Fuel Antigel: Cold-weather fuel-delivery problems? This is said to disperse water in the fuel, prevent filter icing, and lower the cold filter-plug point by as much as 35 degrees F, as well as clean the fuel injectors and lube the rotary pumps. $12.50. Info: Justice Brothers, 626/359-9174, www.justicebrothers.com.
MP-8 Power Control Module for Cummins, Duramax, Power Stroke, and Internationals; Liberty CRD is coming soon: This program3mer offers a selection of performance levels from a dash-mounted knob, and it's compatible with any performance programmer or downloader already installed in your truck's computer. MSRP is $495. Info: TS Performance, 270/746-9999, www.tsperformance.com.
Exhaust system: The 4-inch mandrel-bent, polished stainless steel tubing system has a high-flow muffler and 5-inch-diameter tip. It bolts up using factor hangers and flanges. It's under $900. Info: Volant Cold Air Intakes, 909/476-7225, www.volantperformance.com.