How-to: Jeep Engine Tuning and Troubleshooting Rapid advances in engine fuel-and-spark management span the modern Jeep era. In 1987, the YJ Wrangler 2.5L four became…
How-to Articles
How-to: Jeep Engine Tuning and Troubleshooting Rapid advances in engine fuel-and-spark management span the modern Jeep era. In 1987, the YJ Wrangler 2.5L four became…
How-to: Tuning the Jeep CJ & YJ Wrangler 4.2L Inline Six The 4.2L/258 six found in Jeep CJs and many 1987-90 YJ models…