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HP Tuners: From Garage to Global

HP Tuners built their business on one thing: Giving everyday enthusiasts the ability to modify factory ECUs to their heart’s content.

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All , BMW
Troubleshooting 101: Basic Steps When Your Car Won't Start

Sometimes a Simple, Methodical Approach Can Bring That Dead Car Back to Life

Lincoln
Trial By Wire: Creating You Car's Electrical System From Scratch

Building circuits may be intimidating, but with a little careful planning, running wires will quickly feel as familiar as changing a ball joint.

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Action Cam Guide

Capture your on-track memories with today’s latest and greatest

Dodge
Cut-Rate Rallycrosser — Part 3: Breaking and Braking

We still had some questions as to why the engine came unglued in such a spectacular fashion.

Mazda
Speed Racer

Digital Tweaks for a 21st-Century Hotrod

BMW
Digital Revolution

Do electronic driver aids really help, or do they portend a dystopian, HAL 9000-style futureworld ruled by draconian robot overlords. We find out.

MegaCapable

Beating The Man With DIY Fuel Injection From MegaSquirt

All
ZAP!

How to Diagnose and Solve Automotive Electrical Problems

BMW
Mass Air Sensors

Get rid of the air flow meter bottleneck on older cars by retrofitting a modern mass air sensor.

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