Search for “exhausts”

Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more. Got a stock LS engine? Simply download a base map and you're on your way. Got a turbocharged, n...

The Terminator X Stealth 4500 EFI system from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 1500 HP naturally aspirated or 1250 HP on forced induction applications. The Terminator X ECU is capable of fuel map self-learning...

Each tank is a direct fit for your application with no body modifications necessary. The kit includes the tank, a 255 lph fuel pump, a fuel level sender, and new tank straps. The tank is powder coated for corrosion resistance and great looks. This...

Each tank is a direct fit for your application with no body modifications necessary. The kit includes the tank, a 255 lph fuel pump, a fuel level sender, and new tank straps. The tank is powder coated for corrosion resistance and great looks. This...

The Terminator X Stealth 4500 2x4 EFI systems from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 1500 HP naturally aspirated or 1250 HP on forced induction applications. The Terminator X ECU is capable of fuel map self-lea...

Each tank is a direct fit for your application with no body modifications necessary. The kit includes the tank, a 255 lph fuel pump, a fuel level sender, new tank straps, and the filler neck. The tank is powder coated for corrosion resistance and ...

AN ALL NEW LOOK, AN ALL NEW ATTITUDE! INTRODUCING THE JUICE WITH ATTITUDE CTS3 LINE AVAILABLE NOW!Featuring our state-of-the-art CTS3 technology, the Juice with Attitude just entered the a whole new realm to continue pushing the limits of on-the-f...

Looking for a plug and play kit for your Ford Modular engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more! Is your cam too wild for a MAF? Power adders? You name it, and Holley EFI can handle it....

316 Stainless steel weldment bungs for 1/4" EGT probes. These high-quality weld bungs feature a built-in step, which keeps the bung held in place during the welding process, ensuring a perfect weld.Specs: Brand: Holley EFI Category: Emission Con...

Fuel tank is a direct fit for your application with no modifications necessary. The kit includes the tank, a 255 lph fuel pump, fuel level sender, new tank straps, and the filler neck. The tank is powder coated for corrosion resistance and great l...

Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more! Got a stock LS engine? Simply download a base map and you're on your way. Got a turbocharged, n...

Introducing the next generation Evolution CTS3: all-new, full-Color Touch Screen CTS3. The CTS3 will continue to include all of the great features, benefits, and extended coverage from the CTS2 product line, all while adding a sleek, new exterior ...

Refined power. Smarter drivability. Real-world performance. Designed specifically for the 2022.5–2025 GM 3.0L Duramax LZ0 platform, this custom Power Tune Package enhances torque delivery, throttle response, transmission behavior, and overall effi...

SAVES FACTORY SETTINGS AND RETURNS EASILY TO STOCKIntroducing the next generation Evolution CTS3: all-new, full-Color Touch Screen CTS3. The CTS3 will continue to include all of the great features, benefits, and extended coverage from the CTS2 pro...

These JS Speed Diesel calibration files are selected by L5P model year: a five-level SOTF file for the earlier platform, or a single-calibration file for the later platform. Vehicle fitment 2017–2023 L5P: select Switch On The Fly. 2024–2025 L5P: s...

Introducing the Sniper EFI BBD Master Kit, for Jeep CJ's! The Sniper EFI BBD will be right at home on any 258ci powered trail rig, or weekend cruiser. Not only does the Sniper EFI BBD offer superior throttle response and WOT power over the carbure...