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AUDI A4 Air & Fuel Delivery

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Results 1 - 24 of 24

Go Fast Bits G-Force III Electronic Boost Controllers

The G-Force III is the latest iteration of Go Fast Bits' feature-packed electronic boost controller—now with the ability to monitor and display your engine's air/fuel ratio in either Lambda or AFR. By connecting the analog output of most wideband oxygen controllers (i.e. Innovate LC-2, AEM UEGO etc.; sold separately) to the G-Force III's auxiliary input, you can toggle between boost pressure and air/fuel ratio display. This saves you from having to install a separate AFR gauge in your car, and it can also save your engine! A lean mixture at high boost can destroy an engine in seconds, and a stand-alone AFR gauge is next to useless when accelerating hard, as your concentration is likely to be on the road in front of you. The G-Force III safeguards your engine against a lean mixture by lowering boost to the minimum setting, and visibly warning you by flashing the display lighting. Whether your car is a daily driver or an all-out track weapon, the G-Force III has the features to tailor boost to suit your needs. Set up to six boost presets and select on the fly; use the scramble feature for overtaking, launching, towing, or protecting the engine—and you can even customize the lighting color to suit your interior! No other EBC on the market offers the features, control, ease of use, and value for money like the G-Force III! Additional G-Force III electronic boost controller details: * For boost pressures up to 50 psi (3.45 bar, 345 KPA) * Adjust peak boost, rise rate, and closed loop correction. * Display boost pressure in PSI, BAR, or KPA * 6 Boost presets, individually programmable * Unique "scramble" feature with remote switching * Peak boost recall * Air/fuel ratio display in AFR or Lambda (when connected to a wideband oxygen controller) * Separately adjustable overboost and lean mixture warning/boost cut * Touch buttons with user selectable illumination colors * Auxiliary input to switch boost presets or activate scramble * 1/2 DIN size casing, fits standard stereo slot * Supplied with MAC 3-port solenoid

5.0 out of 5 stars ( 1 )

$396.00

On Sale

APR Carbon Fiber Intake Systems

APR carbon fiber intake systems let your engine breathe! The stunning carbon fiber design rejects power-robbing heat from your engine bay and efficiently delivers an unrestrictive path for cold, dense air fed from outside the engine bay. These systems use high-flow filters, providing excellent filtration without restrictions—prudently keeping the engine clean and optimizing power delivery. They dramatically outflow your stock intake, sharpening throttle response and lessening strain on the turbocharger. APR carbon fiber intake systems typically install in minutes, look fantastic, instantly deliver a sporty engine note, and are recommended for all stages of performance.

Not Yet Reviewed

$1,099.95


$535.95

Hitachi Fuel Injection Pumps

Hitachi offers direct injection high pressure mechanical fuel pumps for a wide range of vehicles, particularly import models. These stock replacements are built to OEM specifications for performance and longevity. Order the fuel injection pump recommended for fitment on your car or truck.

5.0 out of 5 stars ( 1 )

$278.99

$307.99

Turbosmart Kompact Dual Port Blow-Off Valves

Turbosmart Kompact dual port blow-off valves offer high performance, OEM fitment, versatility, and affordability—in other words, everything you need! These BOVs feature dual ports that vent into both the atmosphere and the air intake, reducing turbo lag and eliminating cavitation. Turbosmart Kompact dual port blow-off valves are designed to be bolt-on replacements for plastic factory Bosch or Denso units. They use sequential timing to allow for quieter operation during normal driving, while still providing the benefits of a vent-to-atmosphere type BOV under race conditions. They are easily converted into full atmospheric or full bypass units by using the included port blanking plug.

4.65 out of 5 stars ( 26 )

$289.95

APR Throttle Response Boosters

The APR Throttle Response Booster instantly transforms the way your vehicle feels by customizing how quickly your throttle or accelerator pedal works. Simply plug it in and either use the wireless controller or smart phone app to set or customize how the pedal feels. Most people don't like the way their throttle pedal feels; and while tuning can help eliminate lag, everyone has a different opinion about how it should feel. This throttle booster device lets you set it exactly the way you want and allows you to quickly switch between profiles. Set it to stock, sport modes, extreme modes, and eco modes with ease. Best of all, it's a quick plug-and-play device that can be removed at any time. Additional details: * Improves throttle response and transforms the feel of the vehicle * Multiple switchable profiles, including various sport modes, eco modes, and custom maps * Custom throttle mapping allows you to perfectly tune your throttle pedal * Thin and classy wireless controller * Bluetooth iOS and Android mobile app * No clunky boxes, wires, or controllers like other devices * Connects to the throttle harness, leaving your OBDII port free * Quick and easy plug-and-play design that is removable without a trace * Works on gas, diesel, alternative fuel, and electric vehicles

Not Yet Reviewed

$274.95

DeatschWerks Fuel Injectors

DeatschWerks fuels your passion for performance with fuel injectors specifically designed and engineered for your Sport Compact, Modern Muscle, and European vehicles. DeatschWerks fuel injectors are manufactured to fit your OE harness, fuel rail, and manifold. Because they are application-specific, you'll spend less time installing and tuning, so you can spend more time enjoying the increased performance of your ride! They provide an excellent spray pattern and atomization for optimized idle and tuning. Each set is flow-matched both statically and dynamically, and flow-balanced to within one to two percent. A flow report is included with each set of DeatschWerks fuel injectors.

4.68 out of 5 stars ( 66 )

$329.00

$419.00

AEM Induction Cold Air Intake Kits

AEM Induction cold air intake kits outperform every other cold air kit on the market. The difference is in their mandrel-bent aluminum or polyethylene intake pipe, which relocates the air filter outside of the engine bay for a cooler, denser intake charge. Unlike many other kits available, each pipe is individually tuned, in both length and diameter, to a specific application for maximum power gains. These AEM Induction cold air intake kits include an air filter, intake tube, and complete hardware kit. Order the model designed for fitment and best performance on your specific vehicle.

4.46 out of 5 stars ( 104 )

$367.99

Turbosmart Kompact Shortie Plumb Back Blow-Off Valves

Turbosmart Shortie Kompact Series blow-off valves are specifically designed to suit aftermarket and upgraded factory turbos. Unlike standard plastic valves that use single-layer diaphragms (which are known to crack under increased boost), the new Kompact valves use an O-ring sealed piston; coupled with their billet aluminum construction, this allows them to support over 30 psi. These blow-off valves are available as universal models or as a bolt-on replacement for the factory valve on all BorgWarner EFR, KKK, and most Eco-boost turbos. The Kompact Shortie Plumb Back provides better boost response and greater boost handling capability.

Not Yet Reviewed

$254.95

APR PEX Intake Systems

APR PEX intake systems are attractive high-performance upgrades designed to increase performance by letting the engine breathe more freely. Their closed airbox design rejects power-robbing heat from the engine bay thanks to the high-heat deflection material used, and it provides an unrestrictive path for cold, dense air fed from outside of the engine bay to maximize power. A high-flow, reusable filter provides excellent filtration without the restrictions, which keeps the engine clean while optimizing power delivery. APR PEX intake systems recorded a 31 percent cfm improvement over the factory airbox, which translates into a sharper throttle response, lessened strain on the turbocharger, and more horsepower and torque. Offering an excellent value, PEX systems install in minutes, looks fantastic, deliver a sporty engine note, and is recommended at all stages of performance.

Not Yet Reviewed

$449.95

K&N 69 Series Typhoon Cold Air Intake Kits

Built for power and show, K&N 69 Series Typhoon cold air intake kits are engineered to dramatically reduce intake restriction, resulting in additional horsepower and torque. These air intake kits primarily feature a free-flowing, mandrel-bent aluminum tube induction system designed to fit many performance vehicles. The Typhoon kits come in one of three designs: cold air intakes, short ram intakes, or complete cold air intakes—which can be configured as either cold air or short ram intakes. Some air intake models feature high-quality tube and end cap finish options, including polished aluminum, and black, blue, red, or silver powdercoated, among other options. Order the K&N 69 Series Typhoon cold air intake kit that is suited to fit your vehicle application.

4.72 out of 5 stars ( 461 )

$317.99

$419.99

APR Fuel Injectors

APR fuel injectors are capable of supporting over 500 hp in extreme applications, these gasoline direct-injection injectors feature the proper spray pattern designed to support reliable operation in all normal conditions. Injectors are plug-and-play with the applicable tune.

Not Yet Reviewed

$324.95

GMB Direct Injection High-Pressure Fuel Pumps

Gasoline direct injection (GDI) engines are designed to inject highly pressurized fuel directly into each cylinder's combustion chamber, providing better emissions, improved fuel economy, and more power … they also need more highly pressurized fuel. GMB direct injection high-pressure fuel pumps are advanced mechanically driven pumps that will reliably create a high enough pressure to fully atomize the fuel, providing your GDI engine what it needs to perform correctly. GMB GDI pumps are built from premium materials, tested, and manufactured to meet or exceed OEM specifications. GMB offers several models that are compatible with over 12 million vehicles! Choose the one designed for your vehicle.

Not Yet Reviewed

$539.99

Carter Replacement OE Electric Fuel Pumps

Carter OE replacement electric fuel pumps are manufactured in a plant that is TS16949 certified and provides the absolute latest in OE-quality certifications. This dedication to excellence, combined with in-depth OE experience, results in products that provide dependable performance that meet or exceed expectations. Carter OE replacement electric fuel pumps feature: * Factory-specified pressure and flow * OE-matched electrical connections * Accurate diameter and length * Original inlet and outlet positions * 100 percent factory-tested reliability * Roller vanes, which are more contaminant-tolerant than other designs * Carbide and brass bearings instead of plastic for longer life and smoother operation

4.39 out of 5 stars ( 181 )

$438.99

$484.99

Go Fast Bits Deceptor Pro II TMS Universal Motorized Blow-Off Valves

Go Fast Bits Deceptor Pro II TMS Universal Motorized Blow-Off Valves enable you to control the sound of the BOV from inside the cabin! So how much more can you do with a blow-off valve? Well, the Deceptor Pro II takes the 'Respons' concept even further: * Adjust your BOV venting bias electronically on-the-fly * Revised porting to optimize flow and venting bias * Compact design fits in most factory valve locations * Direct bolt on for many vehicles * New bore finishing process ensures a lifetime of reliable operation Additional features: * Remote proportional venting bias/volume control—from silent to loud or anywhere in between * Sleek, compact in-car BOV volume controller with backlit dial * End point adjustment to control maximum vent to atmosphere bias setting * Volume adjustment mechanism driven by a high-torque geared electric motor * Durable, low-friction gear train supported by precision sealed ball-bearing * Supplied with all parts and wiring required to have it up and running quickly and easily * Models available in a variety of inlet/outlet sizes for applications such as Kia, Toyota, VW, Audi, Saab, Subaru, Misubishi, and Nissan

Not Yet Reviewed

$453.60

Injen SP Series Speed Pro Intake Systems

Injen SP Series Speed Pro intake systems are developed for enthusiasts who demand the best. These units feature Injen's patent-pending MR Technology process for optimal gains and a safe air/fuel ratio. Speed Pro Series models do not limit themselves to just cold air intake or Short Ram systems—the MR Technology process has its effects on both types. The Speed Pro Series are the world's first bolt-on tuned intake systems designed specifically for your vehicle. The aluminum tubes are available in a variety of finishes; and the blue synthetic filters prevent particles from contaminating the engine..Hundreds of configurations are available; order the intake tailored for your application.

4.77 out of 5 stars ( 22 )

$436.51

Dorman Throttle Bodies

Restore proper engine function with Dorman throttle bodies. These electronic assemblies will maintain the correct volume of airflow into your engine. Each of these units features a butterfly valve, which is electronically controlled by the ECU to precisely open and close for the correct regulation of the fuel/air mixture. Many feature cast aluminum housings with an exact fit for an easy installation. Dorman throttle bodies offer durable, reliable performance that is essential to the operation of your engine.

4.25 out of 5 stars ( 16 )

$389.99

Summit Bucks

Delphi Fuel Injection Pumps

Delphi fuel injection pumps feed your gas or diesel engine. Precisely delivered fuel keeps your engine running smoothly and provides the right amount of fuel to gain power. These Delphi pumps are built from quality materials and are validated by Delphi to ensure the best performance in your rig. Give your cylinders equal shots of fuel for better performance with Delphi fuel injection pumps.

5.0 out of 5 stars ( 1 )

$308.99

$583.99

Aeromotive Billet Fuel Rails

Aeromotive billet fuel rails are built for maximum fuel flow and ease of installation. They deliver optimal injector supply with minimal hydraulic fluctuation and will feed up to 3,000 hungry horses. The fuel rails feature ORB-08 ports with compact connections and positive leak-free sealing. Full-size ports at the end of the rails insure proper fuel flow. Additional inlet and outlet ports are provided where required for plumbing convenience. Steel mounting brackets are custom engineered for each application, combining a solid durable mounting platform that ensures a correct fit. Aeromotive fuel rails are CNC-machined and include a great looking anodized finish. Order the kit recommended for your vehicle.

4.36 out of 5 stars ( 14 )

$290.15

Summit Bucks

Delphi Fuel Pump Module Assemblies

Delphi fuel pump module assemblies are nickel plated with all-steel internal components. They feature internal guide rod springs and external rubber feet for enhanced stability and reduced noise from vibration. These fuel pumps have little flow or pressure variation in hot fuel situations. Delphi fuel pump modules are designed to be OE replacements.

4.51 out of 5 stars ( 250 )

$263.99

$475.99

Standard Motor Diesel Fuel Injector Pumps

Standard Motor diesel injector pumps meet or exceed OE specifications to ensure proper vehicle operation during peak performance. Their internal components and seals are quality tested to meet OE specifications, and each comes with a new pressure regulator and necessary gaskets for quick, trouble-free installation.

1.0 out of 5 stars ( 1 )

$269.99

$387.99

Standard Motor Fuel Vapor Canisters

Standard Motor fuel vapor canisters are designed to store fuel vapors from the engine and keep them from venting into the atmosphere. Manufactured with the highest grade materials for prolonged life and superior performance, Standard fuel vapor canisters meet or exceed original equipment specifications and fit in the OE location.

4.42 out of 5 stars ( 31 )

$487.99

Standard Motor Fuel Injectors

Standard Motor Products fuel injectors help you attain maximum fuel efficiency and power from your engine. Properly operating injectors are essential components for enabling your vehicle to run flawlessly. These OEM stock replacements are available for hundreds of specific applications. Don't drive with faulty fuel delivery. Update worn or malfunctioning fuel injectors with reliable models from Standard Motor Products.

4.68 out of 5 stars ( 246 )

$321.99

Standard Motor TechSmart Throttle Bodies

Restore proper engine function with Standard Motor TechSmart throttle bodies. These electronic assemblies will maintain the correct volume of airflow into your engine. Each of these units features a butterfly valve, which is electronically controlled by the ECU to precisely open and close for the correct regulation of the fuel/air mixture. Many feature cast aluminum housings with an exact fit for an easy installation. Standard Motor TechSmart throttle bodies offer durable, reliable performance that have made Standard Motor Products an industry leader for more than 95 years.

4.2 out of 5 stars ( 10 )

$306.99

Go Fast Bits Respons TMS Universal Blow-Off Valves with TMS Advantage

Go Fast Bits Respons TMS Universal blow-off valves with TMS Advantage are patented adjustable venting bias system diverter valves. GFB's Respons BOVs allow you to precisely control how much air expels from each of the two outlets, which is key for two reasons. First, you can adjust how loud the blow-off sound is--recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it anywhere in between to suit your preference. Second, you get a blow-off sound without causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF). And this is accomplished by simply twisting the adjusting ring. GFB's Respons TMS Universal blow-off valves are not just noisemakers. They also offer better throttle response, faster boost recovery on gearshift, and unlimited boost-holding. Using GFB's TMS (Turbo Management System) principle, tests show that Respons valves can return the engine to peak boost up to 30 percent faster than a factory diverter valve when shifting gears.

Not Yet Reviewed

$307.80

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