Browsing: The Tech

XForce Stainless Steel 3-inch Catback System with Varex Mufflers P/N – ES-SW26-VMK-CBS XForce’s Stainless Steel 3-inch Cat-Back System with Varex Mufflers is a very unique system, given its selling point of variable valve mufflers. A remote control or mobile app via Bluetooth enables users to control a set of valves built into the mufflers, adjusting sound levels on the fly. This feature, combined with the 304 stainless-steel construction adds up to a total weight of 52.4 lbs. The main piping routes measure a diameter of 76.2mm with 1.5mm wall thickness, while the Y-pipe splits into smaller 63.5mm diameter pipes. With…

TurboXS Catback Exhaust System P/N – WS15-CBE The TurboXS Catback Exhaust System features a TIG-welded, 304 stainless-steel construction. The pipe diameter spans 76.2mm with 1.5mm-thick walls, then reduces to 63.5mm after the Y-pipe split into the two mufflers. The pieces fit together with laser-cut 11.5mm flanges. This exhaust also includes a flex joint in the mid-pipe. At the rear-end, four large 101.6mm, slant-cut tips sport a burnt look for extra aesthetic points. The TurboXS exhaust sits on the heavier side, largely due to its bulkier mufflers, weighing in at 52.4 lbs. This also results in a very silent product, delivering…

Remark Cat Back Exhaust The Remark Cat Back Exhaust is made from TIG-welded, 304 stainless-steel. The 76.2mm piping has 1.5mm-thick walls, and narrows down to 63.4mm after the Y-pipe into the muffler inlets. The four pieces fasten together via 8.6mm cast flanges and a 10mm laser-cut flange at the down pipe end. With a weight of 34.5 lbs., this exhaust is the lightest stainless-steel system in the lineup. The two mufflers with their giant 106.5mm (changeable) tips made for a strong, bass-heavy tone. The exhaust found its peak volume at 3,000 RPM with 93 decibels. The Remark exhaust system increased…

SubiSpeed Quad Tip Catback Exhaust System P/N – quad-15wrxsti-ctbk SubiSpeed’s Quad Tip Catback Exhaust System features a TIG-welded, four-piece system made from 304 stainless steel. Weighing in at 35.4 lbs., it is one of the lighter stainless-steel options we tested. The pipe diameter spans 76.2mm before the Y-pipe, which then shrinks down to 63.5mm just before the two mufflers. This exhaust system bolts onto the down pipe with a 9.6mm laser-cut flange, followed by slip-fit connections between the mid-pipe, Y-pipe and mufflers. The four 90mm slanted tips extend a little further behind the car than the other exhaust systems, providing…

Mishimoto Subaru WRX/STI Cat-Back Exhaust, 2015+ P/N – MMEXH-WRX-15 Mishimoto’s Cat-Back Exhaust for the 2015+ WRX and STI comes in four pieces made from TIG-welded 304 stainless-steel. The 76.2mm piping has 1.5mm-thick walls and attaches together with a laser-cut flange at the down pipe end, a slip-fit opening with clamp at the mid-pipe to the Y-pipe, then V-band fittings from the Y-pipe to the muffler inlets. After the Y-pipe splits into the two muffler inlets, pipe diameter narrows from 76.2mm to 57.1mm on each side. Mishimoto’s exhaust system delivered an emphasized deep rumble sound from the EJ257, while keeping sound…

Magnaflow Competition Series Exhaust System P/N – 15472 The Magnaflow Competition Series Exhaust System for the WRX and STI features a TIG-welded 409 stainless-steel construction with 76.2mm-diameter piping. Aside from the stamped steel flange at the down pipe end, the exhaust system utilizes slip-fit ends with clamps to secure the four pieces in place. The 76.2mm diameter is maintained throughout the length of the exhaust, up to the two mufflers at the end. The Magnaflow exhaust system produced an aggressive, growling exhaust note, touching on 95 decibels at 5,000 RPM at its loudest. This exhaust employed four massive 101.6mm dual-wall,…

Injen Technology Catback Exhaust System P/N – SES1206TT Injen Technology’s Catback Exhaust system for the WRX and STI features 76.2mm-diameter piping made from 1.5mm-thick 304 stainless-steel. The four pieces join together by way of cast flanges, 14mm thick at the down pipe and mid-pipe attachment points, and 11.5mm thick where the Y-pipe meets with the muffler inlets. The Y-pipe splits into smaller, 60mm-diameter piping that leads to each muffler. The Injen Technology exhaust was among the loudest and most bass-heavy. Although the exhaust notes were favored by many of the DSPORT staff, sound levels matched the legal limit of 95…

GrimmSpeed Catback Exhaust System – Un-Resonated GrimmSpeed’s Catback Exhaust System – Un-Resonated for the WRX and STI consists of TIG-welded, 304 stainless-steel in four pieces. This model is unique in that it is designed to work with 2011-2014 and 2015+ models with its dual hangers, and it includes polyurethane mounting hangers to replace the original rubber ones. It utilizes 76.2mm diameter piping with 1.6mm-thick walls, mated together with 13mm laser-cut flanges. After the split in the Y-pipe, pipe diameters narrow down to 63.5mm. This exhaust also weighed among the heavier systems, totaling at 52 lbs. Sound levels maxed out at…

Extreme Turbo Systems Cat Back Exhaust System (Burnt Tips) P/N – 2015-WRX-CB The Cat Back Exhaust System from Extreme Turbo Systems (ETS) is constructed from 304 stainless-steel in four pieces. This TIG-welded exhaust system utilizes 76.2mm piping with 1.5mm-thick walls, with a laser-cut flange at the down-pipe attachment point and V-bands to mate the Y-pipe and two mufflers. Its construction allows it to press the scales at only 39.6 lbs., making it relatively lightweight compared to the other exhaust systems. Sound levels peaked at 92 decibels at mid-range and high RPMs, with some drone heard from inside the car. However,…

We’ve all seen videos of race leaders stumbling over the last drops of fuel in their tanks, their engines sputtering and misfiring as fuel flow sporadically cuts out. Sometimes they are lucky enough to coast past the checkered flag in first place, other times the competition catches up and blows past them at full tilt, watching their victory get snatched away at the last possible second. Text by Stanley Yee // Photos by Joe Singleton and Courtesy of Holley In racing, fractions of a second in lap times can make the difference between winning and losing. Teams don’t waste any…

Many racing sanctioning bodies require drivers to be able to exit a stopped car in only seven seconds in the case of an emergency. This may not sound like a long time, but it can feel like forever when flames fill the vehicle cabin. All the while, the driver must shut off the car, cut the power, engage the fire suppression system, release the six-point harness, remove the steering wheel, unhook the window net and open the door to get out. Each of these items play a key role in keeping a driver safe in different ways, while allowing them…

REGARDLESS OF WHETHER you’re talking about an athlete or a vehicle with a combustion engine, improving aspiration can make a tremendous difference to performance. Just as a runner trains at elevation to make breathing easier at sea level, helping a turbocharged vehicle breath easier will net horsepower gains. Text by Richard Fong // Photos by Jun Chen and Richard Fong // Testing by Jeren Walker In the last Test & Tune installment, our 2011 WRX realized a peak gain of 18.48 horsepower with just an intake, exhaust and a reflash. In this segment, we continue to search for power and…

SUBARU’S GVB WRX COULD BE ONE OF THE the best values in the segment, when measuring performance versus value. It’s less expensive than similar all-wheel drive sedans yet the WRX benefits from its torquey, turbocharged 2.5- liter EJ255 engine. When Subaru released this sedan, its bold lines and flared fenders made its silhouette difficult to discern from its big brother, the STI sedan (with exception of the rally-inspired wing). Our test platform had 35,000 miles on the odometer and enjoyed those miles in completely stock form. Baseline pulls revealed that the WRX comes underrated from the factory. Subaru advertised that the…

Excitement followed by immediate disappointment is what we experienced when we initially learned about the new Civic. We were ecstatic to hear that it would be turbocharged but those happy feelings were quickly deflated when we realized that it was only offered with a continuously variable transmission (CVT). After enough backlash (or perhaps as a result of Honda’s marketing strategy), Honda announced that the 1.5-liter turbocharged engine could be had with an optional 6-speed manual transmission. Our faith in humanity was restored as we planned to get a Civic on our dyno and begin testing the car’s response to modification.…

Whether it’s computers, phones, tablets, operating systems or music applications, Apple excels in treating its users like idiots but gets away with it by way of clever marketing. It removes control and functionality from its products while branding the changes as features. Thankfully, there are still people wiser than this on both a business and consumer level. In a world where tech companies remove features and jack up prices, AEM Performance Electronics proves that there is still hope. AEM’s CD-7 Digital Racing Dash Display give control back to the users, offering one of the most comprehensive feature-sets in the dash…

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