Air Jet DGV, DFV, ICT, EPC 165

EMPI Air Jet 165 for Weber DGV, DFV, ICT, & EPC Carburetors

Precision Tuning for Your VW Air-Cooled Engine

The EMPI Air Jet .165 (Part # 77201.165) is a vital component for enthusiasts looking to dial in the perfect air-fuel mixture on their Holley or Weber-style carburetors. Air jets play a crucial role in the emulsion process, controlling the amount of air that mixes with fuel as it leaves the main circuit. This .165 size is specifically designed for fine-tuning high-speed circuits, ensuring your Beetle, Dune Buggy, or Ghia runs smoothly across the entire RPM range.

Compatible Carburetor Models & Fitment

This air jet is engineered for a wide range of popular Volkswagen and off-road carburetor applications. It is a direct fit for the following models:

• Weber DGV, DGAV, & DGEV: Popular progressive carburetors used on Street VWs and conversion kits.
• Weber DFV & DFEV: The "mirror image" versions of the DGV series.
• Weber ICT: Single-barrel carburetors frequently used in dual-carburetor setups on Type 1 engines.
• EMPI EPC Series: EMPI's high-performance line of carburetors designed for the air-cooled market.

Pro Tech Tips for Carburetor Tuning

Tip 1: High-End Mixture Control. Remember that air jets primarily affect the air-fuel ratio at higher RPMs and larger throttle openings. If your engine feels like it is "leaning out" or losing power at the top of a gear, adjusting your air jet size (like moving to a .165) can help stabilize the mixture without drastically affecting your low-end idle or transition circuits.

Tip 2: The Inverse Relationship. In Weber tuning, the air jet works inversely compared to a main fuel jet. A larger air jet number (like .165 vs .160) actually leans out the mixture by introducing more air into the emulsion tube. If your spark plugs are showing a "sooty" or rich condition at high speeds, stepping up to a larger air jet is often the correct solution.

Tip 3: Use a Dedicated Jet Tool. When installing these brass jets, use a flat-head screwdriver that fits the slot perfectly. Brass is a soft metal and can easily be marred or "burred." A damaged jet slot can create turbulence in the air bleed or make future removal nearly impossible. Always ensure the jet is seated firmly but do not over-tighten.