Browsing: The Tech

SQUASH PERFORMANCE LEXUS IS300 TWIN-PUMP SYSTEM We ran into Squash Performance at the 2012 SEMA Show and were happy to see this new player in the import performance aftermarket. For those looking to go crazy with an engine swap or high-boost engine build, Squash Performance offers its Lexus IS300 Twin-Pump System. While Squash offers a number of different pump options, we tested the system with a pair of “262” Walbro pumps (a.k.a. 400lph pump). The system offers either -8AN or – 6AN feed with a -6AN return. The system we tested had a -8AN feed. The unmodified Walbro 262 performed…

POWERHOUSE RACING SUPRA JZA80 QUAD PUMP Both the Powerhouse Racing Nissan Top Hat and the 044 Magnum Twin solution for the Supra performed extremely well. We expected the Quad Pump for the Supra to be the overall flow king. In fact, it was and it was not. For boosted-applications up to about 25psi of boost pressure (operating pressure of 70psi), the four unmodified Walbro GSS342 pumps outperformed the 044 Magnum Twin pumps. Once the operating pressures went to 75 psi and beyond (above 30psi of boost pressure), those twin Bosch 044s reigned supreme again. The unmodified Walbro GSS342s lost about…

POWERHOUSE RACING SUPRA JZA80 TWIN 044 MAGNUM For a number of years, the Bosch “044” fuel pump has been a motorsports staple. Unfortunately, the street-performance market hasn’t used these pumps that often as they are traditionally used in an external configuration. Fortunately, Powerhouse Racing has a better idea. By putting two modified Bosch 044 pumps on its special hanger, they’ve developed the best flowing twin-pump solution we’ve tested. Running high boost, the Bosch 044 pumps don’t seem to care. For every 10 psi of operating pressure increase, these pumps only lose about 15lph of flow. Need to run 55psi of…

POWERHOUSE RACING NISSAN S14/S33 GT-R TWIN PUMP TOP HAT Offered in a kit form, the Powerhouse Racing Nissan S14/R33 GT-R fuel tank hat allows for easy fabrication of a twin-pump solution. The machined aluminum hat fits in the stock tank while providing a -8AN feed and -6AN return. All of the necessary wiring is also included to power the pumps and receive the signal from the factory sending unit. Since we had a set of Aeromotive 340Stealth pumps laying around, we decided to use these with the Powerhouse Racing hat. This combination proved to allow significant fuel delivery up to…

BUSCHUR RACING WRX/STI DOUBLE-PUMPER Few may remember the short period of time where Buschur Racing was developing hard-core solutions for the Subaru market. Unfortunately much of this development was done at a time when Subie enthusiasts were more interested in the sound from their blow-off valves than real performance. Today, things have definitely changed and high-performance, bighorsepower STIs are a reality. Buschur Racing’s “Double Pumper” for the Subaru 2002-2013 again delivers the goods at a very affordable price. Much like the EVO X design, the modified Walbro GSS340 pumps feed into a Y fitting below the hat. This allows use…

BUSCHUR RACING EVO 10 DOUBLE-PUMPER Featuring the same technologies and solutions as the company’s proven EVO 8/9 “Double Pumper”, the extremely-affordable EVO X “Double-Pumper” solution is also a stellar performer. The pair of modified Walbro GSS340 pumps feed into a Y fitting below the hat. This allows for a single 3/8-inch bulkhead fitting up top. A single 3/8-inch or – 6AN line can be used. On the flow bench, the system performed very well. To our surprise, the single outlet performed better than the individual lines running into a tee on the flow bench. Again, the modified pumps showed some…

BUSCHUR RACING EVO 8/9 DOUBLE-PUMPER Buschur Racing has always taken a no-nonsense, no-frills approach to performance. The extremely affordable EVO 8/9 “Double-Pumper” solution is no exception. Combining a pair of modified Walbro GSS340 pumps in a modified stock hanger gets the job done. A modified hat with 3/8-inch barbed fittings allows for twin -6AN lines to feed the fuel rail. Alternatively, a step-up Y-fitting can be used to combine the twin -6AN lines into a single -8AN line. On the flow bench, the system performed very well. The modified pumps showed some of the least flow loss as operating pressures…

With a turn of the key, your ears, skin and teeth are overwhelmed by an external fuel pump vibrating at the same frequency as an ultrasonic electric toothbrush. Instead of vibrating soft bristles against your tooth’s enamel to remove plaque, the continuous, unrelenting buzz from the mega-flow pump acts like an enhanced interrogation device. During the early years of import performance, both competition and serious-street-performance cars relied upon these noise-polluting pumps to meet the fuel flow demands of highhorsepower, fuel-injected engines. Not even giving up your country’s top secrets would stop the torture dished out from these pumps. Fortunately, those…

Do you believe in miracles? What about a performance fuel that delivers race gas performance at a price below four-dollars per gallon? If you look at performance shops around the country, you’ll find more and more enthusiasts making the shuffle to E85. E85 is a blend of 85-percent ethanol and 15-percent gasoline that delivers racing gas performance at under four-dollars per gallon. While the popularity of E85 was previously restricted to regions offering widespread availability, the increasing support of FLEX fuel strategies by aftermarket engine management systems has made the E85 craze a national phenomenon. While the performance potential and…

In our last STI GVB Test & Tune, we increased the EJ257’s operating efficiency with a bolt-on intake system, a high-flow downpipe, and an exhaust system. These bolt-ons netted a peak horsepower gain of just over 31 horsepower but revealed the limitations of the factory intercooler system as the power curves showed signs of detonation. In this segment we’ll explore solutions that allow us to safely increase the EJ’s power output while eliminating harmful detonation. Text and Photos by Arnold Eugenio // Dyno Testing and Tuning by Bill Knose/HG Motorsports The Parts The STI’s top-mounted intercooler sits above the engine,…

A split second can make the difference between winning and losing a race. A loss of traction is often the cause of those split second differences in performance. Hondata Inc. has studied traction issues experienced by drag racers, road racers, land speed racers and even the daily driver in their quest to put more Hondata-equipped cars in the winner’s circle. What started as a pet project developed into a new product solution thanks to a four-year development effort. Text and Photos by Richard Fong Interference Factory stability control and traction control systems employ the ABS sensors among other factory-installed sensors…

The last time we checked in on our Subaru STI sedan Test & Tune project, we extracted an additional 34.5 WHP by simply changing engine oil, installing new spark plugs, fine-tuning the engine calibration and increasing peak boost pressure by only 1.5psi. This time around, we enlisted the services of several bolt-on parts that are common to the upgrade path for EJ257 owners. In this process, we discovered a few more limitations of the factory system. Understanding these limits allows enthusiasts to make the right choices to safely increase power. Text by Arnold Eugenio // Photos by Richard Fong //…

Subaru’s third-generation STI platform was released in the model year 2008 but was initially available only in the 5-door wagon configuration. This lack of choices had many Subaru enthusiasts holding off on purchases until the release of the GVB-coded sedan in 2011. With a few minor facelift and aero enhancements, the 2011-and-up STI models retained the same 2.5-liter EJ257 turbocharged boxer engine with its factory-rated 305 HP power output. The only notable difference between Gen 3A and Gen 3B STIs, outside of the availability of both the sedan and wagon platforms, was Subaru’s switch to a full-synthetic engine oil straight…

In this day and age of “there’s an app for that,” it is sometimes hard to “wow” someone with new technology. Instead of an “oh my God” reaction, a “that’s pretty cool” response is usually an indicator of something quite innovative. AEM Electronics is hoping for an “oh my God” reaction to its latest engine management system. The AEM Infinity-10 EMS puts leading-edge motorsports-technology engine management into a new platform for PnP high-performance enthusiasts. Text by Michael Ferrara // Photos by Arnold Eugenio The Legacy While AEM may not have technically made the first plug-and-play (PnP) engine management systems, it…

In our first Test & Tune with the K20Z3-based Honda Civic Si, we managed to bump up the power production with an overall 12.6 peak whp gained, with sections of the powerband showing increases as much as 19.1 whp. These power increases were realized with basic bolt-on products and an engine-refreshing upgrade to synthetic oil. For this round of parts, we decided to turn our attention to the area in and around the cylinder head to see if a few more aggressive bolt-ons could add power to our naturally-aspirated coupe. Text by Arnold Eugenio // Photos by Jeren Walker, Vinh…

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