![]() It's polymer construction is not only lightweight and high strength but also virtually eliminates power-robbing heat soak that occurs with commonly available aluminium intake manifolds. This allows interchanging of the various runner lengths so racers can experiment with finding which combination makes the most power in their application. The LSXHR 103mm rectangular port LS3 intake manifold has a set of "tall" removable velocity stacks, however "medium" and "short" stack options can be purchased separately. Tuning parameters remain as programmed, with never any need to adjust for wear.FAST has developed the industry's first polymer tunnel ram-style intake manifold, ideal for generating maximum power in boosted and naturally aspirated engines. The solid state electronics in EFI systems are not susceptible to the mechanical failures associated with carburetors.Borla Induction's FAST Air/Fuel Meter is particularly useful for this purpose, providing a visual, onboard read out of the air/fuel ratio with its 30 LED display. Some EFI systems also have a provision for a cockpit-mounted mixture control with which the driver can vary the air/fuel ratio.Calibrating a fuel system for a specific race venue is hardly necessary with EFI, if adjustments are to be made, a few keystrokes on a PC are all that is necessary. Most EFI systems compensate automatically for changes in altitude and ambient temperature.When converting to forced induction, turbocharging, or supercharging, EFI will enable the user to program boost-relative enrichment easily, usually leading to substantial power increases as a result of accurate fuel delivery.This is especially the case with EFI units incorporating ignition control. More efficient, higher compression ratios are usable, due to accurate fuel metering. ![]()
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