Tuning & Builds
JDM engine builds, dyno results, ECU tuning, power mods, and complete build showcases
Greddy / Trust: The Intercooler Giant That Redefined Japanese Tuning
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
ECU Tuning for JDM Cars: Standalone vs Piggyback
A guide to ECU tuning options for JDM cars comparing piggyback controllers to standalone engine management. Covers Haltech, Link, HKS, and more.
JDM Engine Swap Legal Guide: What's Street Legal?
A comprehensive guide to engine swap legality in the US for JDM cars. Covers EPA rules, state emissions, OBD-II challenges, and documentation tips.
Forced Induction 101: Turbo vs Supercharger for JDM Builds
A detailed comparison of turbocharging vs supercharging for JDM builds. Covers how each works, advantages, platform considerations, and costs.
How to Build a JDM Project Car on a Budget: Complete Guide
Disclosure: This article contains affiliate links. Project JDM may earn a commission if you purchase through our links, at no extra cost to you. Our recommendations are based on community experience and independent resea
ECU Tuning for JDM Cars: Standalone vs Piggyback vs Reflash
Haltech, Link, AEM, or a simple ECU reflash? Understanding the pros, cons, and costs of different ECU tuning approaches.
Intercooler Upgrade Guide: Front Mount vs Top Mount
Bigger intercooler = cooler charge air = more power. But there are trade-offs. How to choose the right intercooler for your build.
JDM Engine Swap Guide: Tools and Parts You Will Need
Disclosure: This article contains affiliate links. If you purchase through our links, we may earn a commission at no extra cost to you. We only recommend products we trust. --- JDM Engine Swap Guide: Tools and Parts Y
Roll Cage Installation Guide for JDM Track Cars
Bolt-in vs welded, mild steel vs chromoly, 4-point vs 6-point — everything about roll cages for JDM cars that see track time.
Fuel System Upgrades for JDM Turbo Cars
Higher boost needs more fuel. A complete guide to injectors, fuel pumps, regulators, and E85 conversions for turbocharged JDM platforms.
Turbo Upgrade Guide for JDM Cars: Choosing the Right Setup
Single turbo, twin turbo, or compound? How to choose the right turbo setup for your power goals, response preferences, and budget.
LSD (Limited Slip Differential) Guide for Drift and Grip Cars
Helical, clutch-type, or welded diff? Understanding limited slip differentials and choosing the right one for your driving style.