Truck Exhaust Guide: How to Choose an Exhaust System for Your Pickup
The purpose of your factory exhaust system is to muffle as much sound as possible. With that comes power-robbing backpressure created by restricting exhaust gas flow from the tailpipes. Aftermarket exhaust systems help you reclaim that power with less-restrictive performance exhaust components to add a little giddy-up to your rig along with more-aggressive exhaust
Turbo Talk: Basic Guide to Choosing a Turbo for Your Diesel
Every light duty modern diesel for the past two-plus decades has been forced induction, but there’s only so much your stock turbo can do. If you want more horsepower than the stock unit can deliver, or if you want to take better advantage of aftermarket modifications such as a programmer or chip, it’s probably time to step up to
Man Claims to Know Whereabouts of James Dean’s Missing Porsche, Passes Polygraph
Someone get Geraldo Rivera on the phone. On the 60th anniversary of actor and racing enthusiast James Dean’s fatal car accident, officials at the Volo Auto Museum in Chicago, IL are “vigorously” investigating credible claims from a man saying he knows the whereabouts of Dean’s long-missing Porsche 550 Spyder. The car (said to be cursed) has been missing
Video: A Closer Look at Edelbrock’s Performer Cylinder Heads & E-Force Supercharger for Jeep
Edelbrock introduced cylinder heads and a supercharger for Jeep, reminding us that there is more to Jeep aftermarket than just suspension, wheels, and exterior accessory upgrades. Edelbrock’s Mike Kovacs paid a visit to Summit Racing’s headquarters in Ohio, and there, the Summit Racing video crew caught up with him to talk about these additions to the
Plug-In Power: Quick Guide to Truck Programmers and Performance Chips
By now, you know the factory programs your vehicle’s computer with the everyday driver in mind. That means things like power and torque are often sacrificed in favor of more mild performance and driver convenience. Luckily, an avalanche of aftermarket computer programmers, modules, and chips has made it easier and more affordable than ever to
Mailbag: What’s Causing My Engine to Misfire?
You’ve got questions. We’ve got answers—the Summit Racing tech department tackles your automotive-related conundrums. This week in our Mailbag, we’re tracking down the cause of misfiring. Q: I have a 1991 Chevy half-ton truck. It has a 305 TBI motor with underdrive pulleys, ACCEL distributor cap, rotor, and 8.8mm wires, platinum spark plugs, and a JET Stage 1 computer
NHRA Wrap-Up: Brown, Worsham, Skillman & Arana Jr. Win Midwest Nationals
Antron Brown extended his mastery of Gateway Motorsports Park by racing to his fourth consecutive Top Fuel victory at the facility Sunday during the NHRA Midwest Nationals. Del Worsham in Funny Car, Drew Skillman in Pro Stock, and Hector Arana Jr. in Pro Stock Motorcycle also were winners in their respective categories at the second
How to Properly Plumb Your Vehicle
Whether it’s in your bathroom or on your race machine, car plumbing can be an exercise in frustration—especially when you finish the job, turn on the faucet or switch on the pump, and discover you have more leaks than flow. While we can’t really help you with your bathroom, we can show you how to
No More Batmobile Replicas, Judge Says!
The 9th U.S. Circuit Court of Appeals has come to the defense of Batman. According to a three-judge panel, the Batmobile is entitled to copyright protection and cannot be replicated without permission from DC Comics, the copyright holder. The ruling was the result of DC Comics’ lawsuit against Mark Towle, a car builder who produced
How to Choose a Nitrous System
The principle is simple: Air and fuel plus ignition equals horsepower; therefore, more air and fuel equals more horsepower. It’s the equation that nitrous systems manufacturers use to help produce incredible power gains—in some cases up to 400 extra ponies—in everything from sport compacts to dedicated race vehicles. Still, many performance enthusiasts don’t fully understand




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