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GMC ENVOY Ignitions & Electrical

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HP Tuners VCM Suite MPVI4 Credit Pro Packages

HP Tuners Introduces VCM Suite MPVI4 Credit Pro packages, the latest evolution of their industry-leading OBDII interface. Built for professionals and enthusiasts alike, the computer programmers connect your vehicle to VCM Suite software (5.2+) for faster, smarter, and more powerful tuning and diagnostics than ever before. With upgraded hardware, expanded connectivity, and future-ready Wi-Fi capabilities, the MPVI4 redefines what's possible in performance calibration and data acquisition. Models are available with 0, 2, 4, 6, or 8 credits. HP Tuners VCM Suite MPVI4 Credit Pro packages feature: * Improved standalone logging: the most powerful device yet, capable of delivering standalone logging performance on par with VCM scanner and a wired connection * Upgraded hardware architecture: New internal processor for improved data throughput and flashing performance; 30x more memory than previous generation MPVI3 * High-speed USB-C connectivity: Faster, more reliable communication with your PC and vehicle * Bluetooth 5.2: Seamless wireless connection for scanning, logging, and TDN support * Wi-Fi ready (future update): Wireless VCM Suite connectivity coming soon * Enhanced storage and efficiency: Increased onboard memory for robust logging sessions * Improved OBDII fitment: A revised, tapered design means a more secure connection and better compatibility with even more makes/models * Built-In Pro feature set: Standard on every MPVI4, enabling standalone data logging and external sensor integration with PROLINK+ * RGB status LEDs: Clear visual indicators for power, connection, and activity status * Cross-Platform Compatibility: Works with VCM Suite (5.2+), TrackAddict, and RaceRender

4.33 out of 5 stars ( 6 )

$399.99

$499.97

Powermaster XS Torque Starters

Powermaster's highly efficient XS Torque starters feature extra-powerful motors that churn out up to 200 lbs.-ft. of torque. Coupled with their 4.4:1 gear-reduction ratio, that equals reliable cranking power for engines, up to a whopping 18.0:1 compression ratio. These starters come with a billet adapter/mounting block for durability. They'll also clear your oil pan if the OE starter did. Some models are available in a chrome plated finish. Starter dyno test results are included. Order the replacement designed for your vehicle application.

4.56 out of 5 stars ( 920 )

$268.99

$345.99

Summit Racing™ High-Output Ignition Coils

Our Summit™ high-output ignition coils give you additional volts of spark energy in a simple, direct replacement package. These coils mount in the stock location with no special mounting needed, but have a lower primary resistance, higher rpm capability, and greater output than stock. They're available in a variety of styles, both universal and application-specific, and can be ordered individually or in sets.

4.49 out of 5 stars ( 380 )

$286.99

$306.99

On Sale

DiabloSport inTune i3 Platinum Computer Programmers

DiabloSport inTune i3 Platinum computer programmers come pre-loaded with industry-best Diablo tunes created by their experienced, professional calibrators. They too, are performance enthusiasts addicted to horsepower and racing—and they appreciate the need for custom tunes to take their vehicles to the next level with additional modifications. inTune i3 Platinum units will get your ride "dialed-in," whether you've added a cam, headers, a supercharger, or power-adder. The i3 performance programmers work hand-in-hand with CMR (Chip Master Revolution), allowing you (and the tuning shop of your choice) to tune specifically for your aftermarket modification—from there, the sky is the limit! You've made a significant investment in premium parts for your vehicle. Now let the DiabloSport inTune i3 Platinum computer programmers tie all the ingredients together to make your ride stand out! Order the model designed for your vehicle application.

4.09 out of 5 stars ( 152 )

$475.95


$427.95

Powermaster High-Amp Alternators

With modern automotive accessories, such as audio/video equipment, navigation systems, aftermarket lights, and other electrical components, the need for higher amperage alternators has increased. Powermaster has responded to this need with these high-amp alternators. They're available in several finishes to suit your style and performance needs. Powermaster high-amp alternators feature: * High output with excellent idle performance * Hand-wound, custom-designed stators * Heavy-duty regulators and rectifiers * Gold plated battery post for better electrical connections * Proof of performance tags

4.49 out of 5 stars ( 114 )

$378.99

$451.99

Odyssey Drycell Batteries

Odyssey sealed rechargeable drycell batteries provide high engine-cranking pulses and are capable of 400 deep cycles. They can be installed on their sides or at any angle and have a 2-year storage life at 25 degrees C.

4.86 out of 5 stars ( 235 )

$429.99

Optima RedTop Starting 12-Volt Batteries

Optima RedTop Starting 12-volt batteries are the ultimate power source for cars, trucks, SUVs, hot rods, and other high-performance vehicles. They're engineered with unique Spiralcell technology, delivering a stronger burst of ignition power, while extending the battery life up to three times longer than conventional models. Maintenance-free RedTop AGM batteries are sealed, leak-proof, and resistant to vibrations—so you can mount them anywhere and in virtually any position on your vehicle. Order the Optima battery designed for your application, and expect a perfect start every time.

4.81 out of 5 stars ( 1543 )

$319.99

MechMan Elite Series Alternators

MechMan Elite Series alternators offer the highest possible amperage and durability available in a reasonably sized alternator. Each one features MechMan's 6-phase technology combined with massive twin rectifier plates and 12 press-fit diodes for excellent durability. The 6-phase hairpin stators make the alternators fundamentally more efficient, equating to incredible output at extremely low engine rpm, less energy wasted in the form of heat, and more horsepower to the wheels. Choose the Elite alternator designed for your vehicle.

4.54 out of 5 stars ( 24 )

$429.00

MechMan S Series Billet Racing Alternators

The MechMan S Series of 6-phase billet racing alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower per kW than conventional 3-phase alternators. They feature 12 diodes, twin rectifier plates, and outstanding airflow to ensure long service life, even in severe conditions. The alternators are available for a broad range of domestic and import applications in 170 or 240 amp configurations—as well as a variety of finishes. (The 170 amp S Series unit uses a stock diameter pulley, making it perfect for high-rpm and racing use.)

4.71 out of 5 stars ( 14 )

$449.00

$499.00

Granatelli Motor Sports Street Fighter Coil Packs

Granatelli Motor Sports Street Fighter coil packs offer true high performance featuring advanced bobbin technology, a specialized magnetic steel core, and optimum windings. These features result in higher energy and voltage outputs, plus arc duration. Installation is easy, too--they're direct bolt/plug-in units.

3.81 out of 5 stars ( 26 )

$346.68

On Sale

DiabloSport inTune i3 Computer Programmers

DiabloSport inTune i3 is their third generation of computer programmers, delivering the same great power, features, and application coverage that has established DiabloSport as must-haves for performance enthusiasts. The inTune i3 units, while designed to keep drivers equipped with added horsepower and torque, are also available with 50 state certification. DiabloSport has bundled performance and compliance to offer more for your car, SUV, or truck—paired with the assurance of knowing you're covered at your local smog or emissions center. There's no need to sacrifice power when you choose DiabloSport inTune i3 computer programmers. Order the model designed for your vehicle application. Key features of DiabloSport inTune i3: * Vehicle licenses available to tune multiple vehicles with just one device * New intuitive online update software to keep your i3 current with extended coverage/features, add an extended product warranty, and more * Industry-leading vehicle application coverage for thousands of cars, trucks, Jeeps, and SUVs * Update on the go with Wi-Fi connectivity

4.32 out of 5 stars ( 28 )

$475.95


$427.95

JET Powr-Flo Mass Airflow Sensors

JET Powr-Flo mass airflow sensors are designed to deliver improved horsepower, torque, and mileage from your car, truck, or SUV by simply replacing the restrictive stock mass air sensor. The factory sensor not only is a major restrictive point in stock intake systems, but it also limits the full potential of aftermarket cold air intake systems. The flow bench tested design of the JET mass air sensors provide airflow increases of up to 45 percent and installs in 10 minutes or less. They are compatible with other aftermarket upgrades including but not limited to: Performance tuning (chips, modules, etc.), exhaust modifications (cat-back, headers, etc.), cold air intakes, and ignition systems. Order the model designed to fit your needs.

4.02 out of 5 stars ( 247 )

$259.99

$359.99

SCT X4 Power Flash Programmers

SCT X4 Power Flash programmers arrive to you pre-loaded with dyno-proven tune files for select vehicles, to unlock your vehicle's hidden potential! Programming your vehicle with one of SCT's pre-loaded tune files is as easy as 1-2-3. Simply plug the OBD-II connector into vehicle's OBD-II port, select the pre-loaded tune files using the simple to navigate menu and in minutes the X4 programs your vehicle for your particular driving style. Additional features and facts about SCT X4 Power Flash programmers include: * Stores up to 10 custom tune files * Full color LCD display * High-speed data logging/monitoring * Reads/clears DTC trouble codes * Dual analog inputs * Most popular vehicles supported * Installs quickly and easily * Easy restoration back to stock * User adjustable vehicle parameters * USB Interface cable included

4.01 out of 5 stars ( 99 )

$399.00

MechMan High-Output Alternators

MechMan offers high-output alternators in a variety of styles, including 240 amp, 320 amp, and 370 amp versions. They can provide a 50 percent increase in amperage output vs. the stock originals. These robust alternators feature pure copper oversize diode rectifiers for outstanding durability. Higher output alternators provide more electrical support for aftermarket accessories such as light bars, winches, fridges, air compressors, inverters, large stereos, and more! Models are available for replacement or upgrade on many car, truck, van, and Jeep applications.

4.38 out of 5 stars ( 8 )

$349.00

Powermaster XS Volt Alternators

Powermaster XS Volt alternators feature a powerful internal regulating system for all performance-based applications. They're great for drag, Circle Track, and stereo competitions. The alternators work well for voltage sensitive ignition systems and lithium battery applications. Dozens of models and options are available. Select the alternator recommended for your vehicle. Features include: * Digital control--response time in milliseconds, compared to seconds for analog regulators * Adjustable voltage--adjustable between 13.5 and 18.5 volts; great for 12 V or 16 V systems * Powerful, reliable internals--short circuit protection and loss of ground protection in a sealed, vibration-resistant housing * One-wire operation--easy to connect, turns on and off with the engine

4.36 out of 5 stars ( 47 )

$345.99

JET Dynamic Spectrum Tuners

Designed for the performance enthusiast who wants total control of their vehicle's programming, JET Dynamic Spectrum Tuners are powerful tuning packages. Their DST software provides you with the tools needed for precise ECU performance tuning, using your laptop or PC. Use of this software will give you the ability to modify virtually every aspect of the vehicle's programming. The stock programming from the vehicle is initially downloaded and saved to your PC with the supplied JET interface cable that connects to the vehicle's diagnostic port. The stock programming can be reloaded to the computer at any time, to return the vehicle's ECU to its original state. The comprehensive, easy-to-use software allows extensive modification of the vehicle's software. This allows control of fuel and spark tables, speed and rev limiters, transmission functions, torque management tables, and many other functions. Modifications are made using detailed table and graph views for easy and accurate parameter editing. Your modifications are saved as a new file, and downloaded to the vehicle's computer.

3.57 out of 5 stars ( 23 )

$499.99

Lingenfelter Performance Engineering 2-Step Adjustable Launch Controllers

Lingenfelter LNC-003 2-step adjustable launch controllers allow you to direct primary and secondary rpm limit settings. These dual spark-based rpm limiters will help provide consistent launch rpm, as well as the ability to load the engine to help build additional boost off the line. They can also be used as adjustable individual cylinder rpm limiters—especially useful with auxiliary fuel control systems where it's nearly impossible to make sure both the factory and auxiliary systems turn off fuel at the exact same time. Make your LSX-based engine and ignition system really perform at the drag strip with Lingenfelter LNC-003 2-step adjustable launch controllers.

5.0 out of 5 stars ( 6 )

$303.99

Summit Racing™ Protorque Starters

Summit Racing™ Protorque Starters are 100 percent new! Our lightweight Nippondenso-type starters offer a 4.0:1 gear-reduction ratio and a whopping 1.9 HP. That's 222 ft.-lbs of racecar cranking power. If that's not enough cranking power to suit you, there are even more powerful 3.1 hp monsters, which are a pound lighter! They have a 4.44:1 reduction ratio and churn out an awesome 342 ft.-lbs. of torque. Both of our Summit Racing™ powerhouses are suitable for engines up to 502 c.i.d., and compression ratios of up to 18.0:1. GM versions are adjustable for five mounting positions; Ford types, for 18. And, to prevent corrosion and electrical shorts, both starters wear a gold dichromate finish.

4.35 out of 5 stars ( 606 )

$261.99

Tilton Severe-Duty Super Starters

Tilton severe-duty Super Starters pack a lot of power into a compact package--a hefty 3.0 hp, in fact. That's enough to crank over just about anything, and they only weigh about 12 lbs. They feature full ball-bearing or needle-bearing construction that's little affected by heat or cold, and most are "clockable" for multiple choices of solenoid positioning. These starters are recommended for engines over 400 c.i.d., as well as high-compression V8s.

4.06 out of 5 stars ( 35 )

$480.25

NGK Ignition Coils

NGK ignition coils are designed to precisely control the spark intensity, delivering optimum power and the quality you expect from NGK. These replacement coils are designed to exceed OEM specifications for accurate, maintenance-free operation. They're easily installed and provide longevity and durability of your spark energy. NGK offers ignition coils as individual replacements or in a Multi-Pak for convenience and to maintain a proper service procedure.

4.48 out of 5 stars ( 61 )

$351.99

$411.99

FAST XR Series Ignition Coils

FAST XR Series coils offer 15 to 20 percent more spark energy than stock coils. They are constructed from premium, ultra-pure copper alloy windings, resulting in firing performance approaching up to 50,000 peak volts. Tested to 8,000+ rpm and almost 1,500 hp, these ignition coils have been proven to perform in some of the harshest street and race engine environments. Designed for all popular engine sizes, the FAST XR Series coils are ideal for any street or racing application where reliable, powerful ignition output is needed.

3.75 out of 5 stars ( 8 )

$417.95

$454.95

Summit Racing™ Alternators

Whether you're looking to add amperage to your electrical system, or style to your engine compartment, we've got a Summit Racing™ alternator to help you accomplish your mission. Depend on Summit Racing™ to get the power you need and the space you crave.

4.54 out of 5 stars ( 924 )

$301.99

CVR Protorque Starters

With 1.9 hp and a 4:1 gear reduction ratio, these CVR Protorque starters are sure to get your engine cranking. These starters feature a unique aluminum housing to eliminate hot start problems and are adjustable (where applicable) to help clear suspension parts, oil pans, and exhaust systems. These CVR Protorque starters are sealed units with rubber O-rings and grommets and also have easily replaceable plungers and contacts.

4.34 out of 5 stars ( 163 )

$250.99

ACDelco Alternators

Losing power? ACDelco alternators can power up your vehicle's electrical systems and charge the battery while the engine's running. They're direct replacements for your factory originals and are manufactured using ISO quality standards. With 100 percent new components and engineering enhancements, they provide improved performance, efficiency, and service life for your vehicle. Almost like your originals, but just a little bit better--ACDelco alternators. Order the model designed for your vehicle application.

4.42 out of 5 stars ( 172 )

$329.99