Company overview. Aces Fuel Injection, Inc., which markets itself as "Aces EFI" (Advanced Component Electronic Systems), is a private, founder-owned aftermarket automotive company founded in 2020 by CEO Hongjun Ma, a former OEM EFI calibration engineer. Its U.S. operations are based in Tennessee; company press materials cite Soddy Daisy, while third-party business directories list a Dayton, TN address. The company describes a team of nearly 125 employees across warehousing, support, sales, marketing, e-commerce, and engineering, roughly a third of whom are engineers. It works with affiliated overseas engineering and production resources. Third-party directory data (Selling.com) estimates revenue in the $10–49M band with 51–200 employees; these figures are not company-confirmed.
Products / operations. Aces designs and sells electronic fuel injection and ignition components for carburetor-to-EFI conversions and modern engine swaps. Its lines include throttle-body injection (TBI) systems such as Killshot, Killshot Fusion, and Deuces Wild; multi-port/sequential systems including Wild Card, Royal Flush, and The Joker; and the Jackpot series for late-model LS, LT, and HEMI platforms, with support for 24x/58x crank triggers and boost. It also sells supporting hardware — CDI ignition, distributors, coils, manifolds, fuel systems, and a power distribution module — plus bundled "Top End" and "Master" kits. Products are sold direct through acesefi.com and via distributors such as Motor State Distributing. This is a genuine operating company, not an NPE.
Patent-litigation posture. Aces appears once in the tracked data, solely as a defendant (0 plaintiff, 1 defendant), which is consistent with an operating company being sued rather than asserting patents. The single case is venued in the U.S. District Court for the Eastern District of Tennessee — Aces's home district, not a plaintiff-friendly venue such as E.D. Texas.
Notable case. Holley Performance Products Inc. v. Aces Fuel Injection, Inc. (1:26-cv-00059, E.D. Tenn., filed March 6, 2026) was brought by Holley, the public (NYSE: HLLY) Bowling Green, KY-based performance-parts manufacturer whose brands include Holley EFI, MSD, and Accel. The docket is docketed as a patent matter (Nature of Suit 830) and also lists a copyright cause of action. Complaint analysis describes allegations that Aces's throttle-body EFI systems infringe patents covering throttle-body assemblies with integrated fuel passages, fuel distribution rings, and horizontally oriented injectors, citing the Killshot Fusion system. A separate PTAB proceeding, IPR2026-00434, lists Aces Fuel Injection, Inc. in its caption (July 2026), though its details are not yet confirmed in available sources.