In Part I of Boost it up/Fuel me up, we previewed A'PEXi's new Super AFC and covered the fundamental basics on the importance of a fuel computer. The importance of utilizing a fuel computer with upgraded performance products can not be stressed enough. The majority of factory turbocharged vehicles utilize a hot wire/flap door type of air flow or density metering system. Some vehicles equipped with flow meter type systems are able to compensate and modify the fuel curve when the vehicle is moderately modified with simple bolt ons. However, there is a limitation on how much the factory ECU can alter the preset fuel curve. If the engine is modified beyond the simple bolt-on stage, the factory ECU is not able to compensate for the extra air, resulting in a lean air/fuel mixture. To increase reliability and horsepower a fuel computer should be utilized. In this installment we will preview A'PEXi's new AVC Type-R boost controller and display dyno-proven horsepower results when used in conjunction with the company's AFC fuel computer. The AVC Type-R is A'PEXi's newest line of boost controllers and supersedes last year's Super AVC-R. The new AVC Type-R hosts a number of new features making the new boost controller second to none. To better understand the purpose of a boost controller and its function we will briefly overview the types of boost controllers available in the market today-manual boost controllers and electronic boost controllers.