EA113 Common Fault Codes & What They Mean
A guide to common EA113 2.0 TFSI fault codes, what they mean, and how to diagnose issues on MK5 GTI and VAG platforms.
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EA113 2.0 TFSI Tuning & Diagnostics Guides
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Factory K04 vs Converted K04: EA113 Comparison
A technical comparison of factory K04 EA113 engines vs AXX/BWA K04 conversions, explaining real-world performance differences.
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EA113 Cam Follower & HPFP Wear: The Silent Engine Killer
A technical guide explaining EA113 cam follower wear, inspection intervals, failure symptoms and prevention to protect your HPFP and engine.
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AXX & BWA EA113 K04 Turbo Conversion Guide
A complete technical guide to converting AXX and BWA EA113 2.0 TFSI engines from K03 to K04 turbochargers. Covers required hardware, compression di...
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Understanding MAF g/s on EA113 – Why Airflow Is the Real Power Metric
A technical guide explaining how MAF g/s reflects real airflow and power on EA113 MK5 GTI turbo engines.
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Dialling in K04 Boost Control on EA113 – From Base File to Safe Calibration
A technical guide explaining how K04 turbo conversions on EA113 MK5 GTI are safely calibrated using boost control, AFR and timing data.
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Boost Duty, Lambda and Timing – Diagnosing a Bad MK5 GTI Tune
A technical guide explaining how boost duty, lambda and ignition timing logs reveal bad tuning on MK5 GTI EA113 engines.
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Why Peak Numbers Lie – Understanding Torque Curve Volume on the MK5 GTI
A real-world MK5 GTI dyno comparison showing why volume under the torque curve matters more than peak numbers. Understand how proper tuning deliver...
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EA113 2.0 TFSI Engine Guide | MK5 GTI K03 & K04 Reference
A detailed EA113 2.0 TFSI engine guide covering MK5 GTI K03 and K04 turbo setups, engine codes, OE part numbers, fuelling and MED9 ECU control.
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