Air Jet DGV, DFV, ICT, EPC 145

EMPI Air Jet 145 for DGV, DFV, ICT, & EPC Carburetors

VW Fitment and Compatibility

This .145 air jet is a precision component designed for fine-tuning the fuel-to-air ratio in specific Weber and EMPI carburetors. It is a direct fit for the following models commonly used on air-cooled Volkswagen Beetle, Bus, Ghia, and Dune Buggy engines:

• Weber DGV, DGAV, and DGEV (Progressive)
• Weber DFV, DFAV, and DFEV
• Weber ICT (Single Barrel)
• EMPI EPC 34 and EPC 38 Series

By controlling the amount of air that mixes with the fuel in the high-speed circuit, this jet is essential for optimizing performance in VW engines ranging from stock 1600cc builds to modified performance setups.

Pro Tech Tips for Carburetor Tuning

Tip 1: Balance Your High-End Mixture. The air jet primarily influences the engine's performance at higher RPMs. If your VW feels like it is "blubbering" or running too rich at wide-open throttle, increasing the size of the air jet (like moving to this 145) will introduce more air into the emulsion tube, leaning out the mixture for a cleaner top-end pull.

Tip 2: Inspect Your Emulsion Tubes. Air jets do not work alone; they sit directly on top of the emulsion tubes. Whenever you swap an air jet, remove and inspect the emulsion tube for any varnish or debris. Even a microscopic clog in the tube's lateral holes can cause "flat spots" in acceleration that no amount of jet changing will fix.

Tip 3: Account for Altitude and Temperature. Air density changes based on your environment. If you are driving your air-cooled VW at higher elevations where the air is thinner, you generally need a larger air jet to prevent the engine from running overly rich. Always perform a "plug chop" (checking spark plug color after a high-speed run) to verify that your .145 jet is providing the correct tan-colored combustion signature.