Why WRX STI Knock Sensors Cause Phantom Power Loss
Your WRX STI's knock sensor might be lying to the ECU about phantom knock events, pulling timing and costing you serious power. Real data shows how often these sensors fail without throwing codes.
When $2K Mods Kill Power: Real Dyno Data Reveals the Truth
A customer's expensive intake upgrade just cost them 15 horsepower — and the dyno data tells the whole story. Here's what really happens when 'performance' mods create more problems than power.