Browsing: The Tech

Racers, their tuners, and like-minded enthusiasts have propelled the tuning industry to once unimaginable new heights. Tuners and consumers alike have gained volumes of knowledge. Thanks to reflash tuning solutions for factory ECUs and greater availability of plug-and-play stand-alone engine management systems, vehicle performance has taken great strides. But with strides come greater risks, and the precision of engine tuning can make the difference between big power or big problems. Text and Photos by Richard Fong IDEAL RATIOS For a combustion engine, proper function hinges on the delivery of a proper air-to-fuel ratio. But what is the ideal ratio? With…

Knock knock. Who’s there? Your blown engine. The four-cycle combustion engine has come quite a long way in its evolution and thanks to technology; it has risen to a precise science. Although precision is great, it also leaves little margin for error, especially at extreme boost pressures and high engine speeds. There are any number of events that could occur which have the potential to cause damage to an engine. One of the worst events is engine knock, the not so silent killer of engines. Like high blood pressure and some forms of cancer, early detection of knock can be…

Sometimes tough luck will find you at the worst possible moment. The only thing you can do is assess the situation, formulate a game plan and execute it. Project Silvia’s SR23 presented an unusual hurdle as we prepared for a NASA HPDE track event. During a routine oil change, an unexpected part had found its way into the oil pan. Attached to the magnetic oil drain bolt was the oil jet that lubricates the timing chain. Text and Photos by Richard Fong Small Part, Hard To Access The press fit oil jet somehow dislodged itself from the block and luckily…

As the import performance tuning world continues to set performance records that seemingly defy physics with built versions of the Nissan R35 GT-R, the capabilities of the Nissan 370Z are sometimes forgotten. The 370Z, brother to the only currently produced Japanese supercar, continues to deliver one of the best bang-for-the-buck performance values in the world. However, adding truly significant power gains while maintaining 50-state emissions compliance hasn’t been an option. CARB legal intake and exhaust upgrades might add a total of 10-to-20 horsepower; raising the VQ37’s output to 300-to-310 peak wheel horsepower (if you’re lucky). Bigger power gains previously required…

Race fuel is for racing? Of course it is. Anyone who’s heavily involved in motorsports is likely to have a collection of cars and parts along with a supply of five and 55-gallon fuel containers. But, why does racing require race fuel? Does higher quality race fuel make more power? Absolutely. In fact, race fuels can produce more power and reliability when combined with the proper engine calibration. The tune for the engine must be optimized to match the burn rate, specific gravity, and stoichiometry of each fuel. The ideal ignition timing, air-fuel mixture, and boost levels depend heavily on…

Purchasing an ECU reflash solution is not an option for FR-S/BRZ owners. Instead, it should be considered a requirement. In fact, it should be the first performance part purchased for the vehicle. The reason is simple. No significant power gains can be realized on the FR-S/BRZ platform with the factory ECU programming in place. We found out the hard way. The world’s best intake and exhaust systems will only deliver small improvements since the factory program uses torque limiting tables. Fortunately, there is a solution. ECUTEK’s ProECU and RaceROM packages not only remove the performance shackles, but also provide an…

TITAN MOTORSPORTS TRIPLE PUMP As the only triple pump system tested and the only with a -10AN outlet from the hat, we were very interested in the results. The trio of Walbro GSS341 pumps did not disappoint. Those running 25psi of boost, would have support for over 1,300 wheel horsepower on gasoline or over 1,000 horsepower on E85. For those running 35psi of boost pressure, the triple system still provides enough flow for over 1,100 horsepower on gasoline or over 850 wheel horsepower on E85. The quality of the machining and engineering with this triple-pump solution is second to none.…

SQUASH PERFORMANCE EVO X DUAL FUELER Designed as a drop-in replacement for the EVO X, the Squash Performance Dual Fueler provides impressive performance in a ” no-core-exchange-needed package.” The system offers either -8AN or – 6AN feed with a -6AN return. The system we tested had a -8AN feed. Equipped with the same “262” Walbros as the IS300 and EVO 8/9 systems we tested, we didn’t know what to expect. At the end of the day, the EVO X system was not up to the level delivered by the other Squash Performance systems tested. We do know the system can support…

SQUASH PERFORMANCE EVO 8/9 DUAL FUELER Designed as a drop-in replacement for the EVO 8 and EVO 9, the Squash Performance Dual Fueler provides impressive performance in a “no-core-exchange-needed package.” The system offers either -8AN or – 6AN feed with a -6AN return. The system we tested had a -8AN feed. Equipped with the same “262” Walbros as the IS300 system, we expected to see similar results. Instead, the pumps in this system showed a more gradual flow loss to operating pressure curve, yet the flow performance at lower pressures was less. This made for a real head scratcher. Was it…

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…

1 12 13 14 15 16