Fuel / Air

Holley Fuel Pressure Regulator Gauge Kit (1-4 PSi / Carb Only) If you are running a Weber carburetor on your Toyota truck, this kit is a must-have and a great way to keep your fuel system running right. Weber carbs work best in the 2.5-3psi range...

Cold Start Injector Service NOTE: Customer is responsible for paying postage to send their cold start injector to LC Engineering. Be sure to include the following with your injectors: Name (First & Last) Return Shipping Address Sales Order...

Throttle Body Spacer Kit Our throttle body spacers feature a unique spiral bore that agitates the incoming air to promote better atomization of the fuel molecules, resulting in a more complete burn in the combustion chamber. These kits include a...

Mechanical Fuel Pump The fuel pump is a very important part of your vehicle. If you do not have the proper fuel pressure or volume you can starve the engine and cause major engine damage. The best way to cure this problem is to replace that worn-out...

Holley 500 to 22R Manifold Adapter Kit (w/ Smooth Bore) We manufacture these billet aluminum carb spacers in house, to our exacting specs. We use only the finest materials in our billet spacers to assure the quality you would expect from LC...

Fuel Pressure Gauge Kit (EFI) Ever wonder if the fuel regulator is doing its job? Not sure if you're getting the right fuel pressure at the fuel rail? This new fuel gauge kit is the solution to this problem. This kit will replace the banjo bolt on the...

1" Pro Spiral Spacer 32/36 & 38 LC Engineering's spiral adapter was developed to enhance mid-range power, torque, and fuel efficiency. The unique dyno-proven spiral bore of the LC Engineering adapter causes the incoming air-charge to spin as it passes...

K&N Air Cleaner & Assembly (56-1350) K&N washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an...

K&N Sidedraft Air Filter 3" (E-3341) K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in...

Holley Fuel Pressure Regulator (1-4lbs) The regulator's job is to keep the pressure in the fuel system at a constant psi (Weber carbs work best in the 2.5-3psi range). Your fuel pressure regulator controls the amount and speed at which fuel is used by...

Sidedraft Carburetor Velocity Stacks (Air Horns / Shorty) Velocity Stacks or "Air Horns" allow smooth and even entry of air at high velocities into the intake tract, and replaces the ducting from the air-box (on EFI applications) providing a cleaner...

OE Throttle Position Sensor Throttle position sensors are switches on the throttle body that keep the engine control computer informed about the throttle opening. The TPS is a variable resistor that changes resistance as the throttle opens wider. The...