JDM engine builds, dyno results, ECU tuning, power mods, and complete build showcases
Hiroyuki Hasegawa founded HKS in 1973 making aftermarket turbo kits out of his Shizuoka garage. Today it's Japan's biggest tuning house, with 800+ employees and benchmark drag and time-attack cars.
Cusco built their reputation on rally-grade chassis reinforcement. Their 6-point and 8-point roll cages are Japan's most respected. Their LSDs and sway bars appear on championship cars worldwide.
Tatsuru Ichishima's Spoon Sports has only ever tuned Hondas. Since 1988, the blue-valve-cover workshop has won Japanese N1 championships and built the Honda aftermarket.
Nismo started as Nissan's racing department in 1984. The Omori Factory became the tuning arm, producing the S-Tune/R-Tune/Z-Tune program and the legendary 400R and Z-Tune R34 GT-Rs.
Tomei has been making JDM engine internals since 1969. Every serious RB26, 2JZ, or SR20 build eventually uses a Tomei oil pump, cam set, or Expreme Ti exhaust.
Blitz started making electronic boost controllers in 1980. They pivoted into a full tuning catalog and a dominant D1 Grand Prix drift program with drivers like Nomura Ken and Tsuchiya.
Powerhouse Amuse's S2000 GT1 is the definitive tuned S2000 — a Tsukuba time attack legend. Their R1 titanium exhausts are the most copied exhaust design in JDM history.
Michizo Niikura's Mine's Motor Sport in Yokohama refined rather than rebuilt. Every Mine's GT-R is balanced to 1000-km rally reliability before making a single extra horsepower.
JUN Auto Mechanic in Tsuchiura has built 2JZ engines since 1990. Their Stroker 3.4 kit, valvetrain components, and hand-balanced rotating assemblies set the global 2JZ tuning standard.
Isami Amemiya has tuned nothing but rotary engines since 1974. His RX-7 FD3S demo cars remain the global benchmarks for peripherally-ported, street-driven rotary tuning.
Smokey Nagata founded Top Secret in 1991 after leaving Veilside. His Gold Supra hit 197 mph on a British motorway, and his V12 Supra remains the wildest engine swap in JDM history.
Mugen was founded by Hirotoshi Honda, son of Honda's founder, in 1973. The company built Formula Junior cars, Formula 1 engines, and the 240-ps Mugen RR Civic Type R — the fastest factory Civic ever.
Greddy (スタートラスト Trust Co., Ltd. in Japan) is, next to HKS, the most commercially successful Japanese aftermarket tuning company in history. Founded in 1977 as "Trust" (トラスト), the company later adopted the **Greddy** brand name for international markets. Greddy's specialty is forc
A guide to ECU tuning options for JDM cars comparing piggyback controllers to standalone engine management. Covers Haltech, Link, HKS, and more.
A comprehensive guide to engine swap legality in the US for JDM cars. Covers EPA rules, state emissions, OBD-II challenges, and documentation tips.
A detailed comparison of turbocharging vs supercharging for JDM builds. Covers how each works, advantages, platform considerations, and costs.
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Haltech, Link, AEM, or a simple ECU reflash? Understanding the pros, cons, and costs of different ECU tuning approaches.
Bigger intercooler = cooler charge air = more power. But there are trade-offs. How to choose the right intercooler for your build.
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Bolt-in vs welded, mild steel vs chromoly, 4-point vs 6-point — everything about roll cages for JDM cars that see track time.
Higher boost needs more fuel. A complete guide to injectors, fuel pumps, regulators, and E85 conversions for turbocharged JDM platforms.
Single turbo, twin turbo, or compound? How to choose the right turbo setup for your power goals, response preferences, and budget.
Helical, clutch-type, or welded diff? Understanding limited slip differentials and choosing the right one for your driving style.
Sequential transmissions offer lightning-fast shifts but at a cost. Understanding dog engagement, paddle shift, and when they make sense.
Manual boost controllers are simple and cheap. Electronic ones are precise and programmable. Which one is right for your build?
Lightweight, responsive, and endlessly tuneable. Why the SR20DET remains the go-to engine for budget builds and drift missiles.
Upgrading the fuel system is critical for any JDM turbo build. Covers pumps, injectors, regulators, lines, and E85 considerations.
Aging JDM transmissions need attention. Learn to diagnose issues, understand the rebuild process, and choose upgrade options for your gearbox.
From Motul to Castrol, 5W-30 to 10W-40 — the right oil for popular JDM engines including the RB26, 2JZ, SR20, 4G63, and EJ257.
Where to source JDM parts in the US and Japan: trusted importers, Yahoo Japan Auctions, proxy services, recyclers, and how to avoid counterfeit HKS and GReddy parts.
JDM tuning guide from bolt-ons to full builds: intake, exhaust, ECU tune, coilovers, intercooler, turbo upgrades, and platform-specific power targets for popular JDM cars.
Complete comparison of DIY ECU tuning systems for JDM builds. Haltech, AEM Infinity, Link G4X, MoTeC, EcuTek, and COBB Accessport compared: features, pricing, ease of use, and which system is best for your project.
Electrify your classic JDM car! Complete guide to EV conversions for AE86, S13, RX-7, and more. Costs, kits, performance, legal considerations, and real-world builds.
Dreaming of an RB26 swap or a 2JZ in your 240SX? This beginner-friendly guide covers planning, legal considerations, and the most popular swap combinations.
