Superchips Trail Jammer EXT for Wrangler
Jeep Wrangler TJ Trail Jammer EXT
Jeep Wrangler TJ owners who would like to increase their vehicles horsepower and responsiveness should consider installing a Trail Jammer kit by Superchips. The package adds three popular bolt-on upgrades to your Jeep 4.0L; a performance air intake, a handheld tuner, and a larger diameter throttle body are all included. Most any shade-tree mechanic can have the entire kit installed in around one hour. We will take a deeper look into this popular kit, because who doesn't want to get more out of their 4.0L AMC 242 CID / PowerTech I6?
The EXT intake in the Trail Jammer kit is your basic high-quality injection molded plastic intake tube with a shroud to surround the included performance oil-impregnated, cotton-mesh air filter. Superchips tests indicate that their intake improves air flow by 97% when compared to the restrictive stock air box(195 CFM compared to the OE 99 CFM). The additional flow is a large part of the reason that the Trail Jammer kit can add 15-20% more horsepower to your inline six. Whats more, unlike paper air filters, the filter element is cleanable and reusable. Simply clean the filter and re-oil it with the recommended kit every 50,000 miles or as needed.
To allow the engine to breath a little easier and take advantage of the increased flow provided by the included EXT intake. The throttle body bore of the unit measures 62mm in diameter. However, when talking about throttle bodies, additional air flow is only part of the equation; as a performance throttle body will also increase engine responsiveness. Some TJ's require a Torx screwdriver to swap the idle control box on. Torx bit sets can be found at local hardware, auto parts, and tool stores.
The third, and perhaps most important, component of the package is Superchip's Flashpaq Tuner. Users can select from several canned tunes that are designed to maximize power, fuel economy, or towing. The unit can also re-calibrate your Jeep's speedometer to account for tire sizes from 22.5" to 42". If your Wrangler has an automatic transmission, the Flashpaq can also adjust the point at which your transmission shifts greats. This feature allows your to utilize the entire power band of your engine and rev higher. The Flashpaq, in conjunction with the other upgrades can shave up to 2 seconds off of your 0-60 time.
Overall drivers are pleased with the performance results they realize from installing Superchip's Trail Jammer kit. The combination of these parts smooths throttle response, boosts pickup, and optimizes shift points for a better driving experience. Dyno testing has proven that a stock 5-speed manual Wrangler can go from 140 HP and 184 ft-lb of torque to 165 HP and 214 ft-lb with the Superchips Trail Jammer. All of these attributes are a welcome improvement for anyone who would like to add some extra performance to their 4.0L Wrangler TJ, without sacrificing stock drivability. The kit is a solid, entry level upgrade for any street driven TJ. If you don't have a Wrangler, kits for 1999-2001 Jeep Cherokee XJ and other vehicles are also available.