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Audi RS5 Tuning: B8 4.2 V8 vs B9 2.9T, and What Each One Really Needs
Audi RS5 tuning compared across the B8 4.2 naturally aspirated V8 and the B9 2.9T...
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Turbo Audi S4: B9 EA839 Upgrades and the Truth About B8 Swaps
The turbo Audi S4 explained: how to upgrade the B9/B9.5 EA839 safely with MAP sensors,...
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Audi C8 A6: Engines, Maintenance and Honest Mod Potential
The Audi C8 A6 explained: engines, the 48-volt mild hybrid system, maintenance habits and realistic...
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What Is a Turbo Back Exhaust? Turbo-Back vs Cat-Back vs Downpipe on Audis
What is a turbo back exhaust, and how is it different from a cat-back or...
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Audi Ignition Coil Replacement: Misfire Codes, Swap Test and DIY Guide
Misfire code on your 3.0T? This Audi ignition coil replacement guide covers P030X codes, the...
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Audi Performance Parts Glossary: 3.0T, 4.0T and Tuning Terms Decoded
Plain-English definitions of the engine codes, supercharger, turbo, exhaust, cooling, drivetrain and wheel terms you...
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Audi S4 B9 Exhaust Guide: Options, Sound and the Upgrades That Matter
Shopping for an Audi S4 B9 exhaust? Here is how the EA839 exhaust is laid...
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