Frequently Asked Questions

Granatelli Motor Sports ignition coils are engineered to deliver significantly more spark energy than factory coils. This improves combustion efficiency, throttle response, horsepower potential, and spark stability under high load conditions. They are designed as direct OEM replacements and are safe for street or racing applications.

Yes. Depending on the application and supporting modifications, customers have reported gains in horsepower, throttle response, and engine efficiency. Naturally aspirated applications may see moderate gains, while forced induction combinations often benefit even more from the increased spark energy.

Most Granatelli ignition coils are designed as direct plug-and-play upgrades and do not require tuning. However, heavily modified vehicles may benefit from a custom tune to maximize performance.

Granatelli "0 Ohm" spark plug wires are engineered with extremely low resistance technology to maximize spark energy transfer while maintaining proper EMI/RFI suppression. This helps improve spark efficiency and reliability in both street and race applications.

Absolutely. Granatelli spark plug wires are designed for both high-performance and daily-driven vehicles. They are OBD-II safe and built to withstand extreme heat and harsh engine bay conditions.

Yes. Many Granatelli wire sets are specifically designed for high-heat environments and are ideal for vehicles running aftermarket headers, turbochargers, superchargers, or nitrous systems.

A larger performance throttle body improves airflow into the engine, which can increase horsepower, throttle response, and overall engine efficiency. It is especially beneficial on modified or forced induction vehicles.

No. Granatelli throttle bodies are engineered to maintain excellent drivability while improving airflow and responsiveness. Proper installation and tuning recommendations should always be followed for best results.

Some vehicles may not require tuning, but for maximum performance gains and proper air/fuel calibration, a tune is highly recommended after installing a larger throttle body.

No. Granatelli Motor Sports products are designed for both street and racing applications. Whether your vehicle is a daily driver, weekend cruiser, drag car, or track build, our products are engineered to improve performance and reliability.

Use the vehicle selector on our website or contact our sales team with your year, make, model, and engine information. We'll help verify the correct fitment before ordering.

Most Granatelli products are designed as direct-fit replacements or bolt-on upgrades. Some high-performance applications may require minor modifications or tuning depending on the vehicle setup.

Under U.S. law, aftermarket parts alone do not automatically void a factory warranty. However, warranty decisions are ultimately determined by the vehicle manufacturer or dealership.

Yes. Granatelli ignition products are designed to support high-horsepower boosted applications and help maintain spark stability under increased cylinder pressure.

Most products are compatible with pump gas, race fuel, E85, and other performance fuel types depending on the application. Always review the product description for specific compatibility details.

With proper installation and routing, Granatelli ignition wires are designed for long-term durability in both street and racing environments. Heat management and proper wire routing are critical for maximum lifespan.

As horsepower increases, cylinder pressures rise. A stronger ignition system helps prevent spark blowout, improves combustion consistency, and supports reliable power delivery under heavy load.

Yes. Many Granatelli ignition and performance products are engineered to support serious horsepower levels, including turbocharged, supercharged, and nitrous-assisted combinations.

Our team is here to help. If you have questions about installation, compatibility, or performance recommendations, contact Granatelli Motor Sports customer support for assistance.

Granatelli Motor Sports has decades of performance industry experience and a reputation built in racing. Our products are designed to deliver real-world performance, reliability, and quality for enthusiasts who expect more from their vehicles.

An exhaust cutout is a valve system installed into your exhaust that allows you to instantly switch between a quieter street setup and a more aggressive open exhaust tone at the push of a button.

Granatelli Motor Sports exhaust cutouts feature a Smart Chip-controlled one-touch operating system designed to prevent over-torquing and internal gear damage. They also include CNC-machined aluminum bodies, stainless steel butterfly plates, high-torque motors, and plug-and-play wiring for reliable operation.

Exhaust cutouts can improve exhaust flow by reducing restriction when opened. Depending on the vehicle and modifications, customers may notice gains in horsepower, throttle response, and overall engine sound.

When installed after the catalytic converters, Granatelli electronic exhaust cutouts typically do not require an ECU reflash or custom tune.

Yes — when opened, the system delivers a much louder and more aggressive exhaust tone. When closed, your exhaust system operates normally for quieter street driving.

Yes, but sound levels may be extremely loud depending on your setup and local regulations. Many customers use the cutouts only when they want maximum sound or performance.

Exhaust and sound regulations vary by state and local laws. Granatelli recommends checking your local emissions and noise regulations before installation or operation.

If installed properly after the catalytic converters and oxygen sensors, exhaust cutouts generally will not trigger a check engine light.

Yes. Granatelli offers exhaust cutout systems in multiple sizes including 2.25", 2.5", 3", 3.5", and 4" applications for both single and dual exhaust systems.

Many experienced enthusiasts can install the systems themselves, especially slip-fit kits. However, professional installation is recommended if welding or custom exhaust work is required.

Weld-in systems are permanently welded into the exhaust for maximum security, while slip-fit systems are designed for easier installation using clamps and require little to no welding.

Yes. Most kits include the cutout assembly, wiring harness, rocker switch, gaskets, clamps or flanges, turndowns, and installation hardware.

Yes. Granatelli offers a wireless remote control system that allows you to operate your exhaust cutouts remotely from inside or outside the vehicle.

Granatelli's Smart Chip one-touch technology automatically opens and closes the butterfly valve without needing to hold the switch down, helping prevent gear damage caused by over-torquing.

Yes. Granatelli exhaust cutouts are commonly used on naturally aspirated, turbocharged, supercharged, and nitrous-assisted performance vehicles.

Exhaust cutouts allow drivers to enjoy the best of both worlds — quiet cruising during normal driving and aggressive race-style exhaust sound when desired.

Properly installed exhaust cutouts should not negatively affect normal drivability. In many cases, drivers report improved throttle response and a more aggressive exhaust character.

Granatelli recommends cycling the cutouts open and closed periodically to prevent carbon buildup. Cleaning and lubricating the valve assembly during routine maintenance can also help maximize lifespan.

When properly installed, Granatelli exhaust cutouts are designed to seal tightly. Proper installation, alignment, and maintenance are critical for optimal sealing and performance.