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Tuning Knowledge
& Insights

Learn the fundamentals
behind performance tuning.
Explore the newest articles on tuning, diagnostics,
and what your logs are actually telling you.

Articles for: Engine Tuning

Why Your 370Z Tune Is Slowly Killing Your VQ37VHR Engine

Your VQ37VHR can handle aggressive tunes, but hidden knock events below 5 degrees retard are slowly eating away at your ringlands. Most tuners miss these subtle engine killers in the data.
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OTS Maps vs Custom Tunes: What the Real Data Shows

We analyzed identical FA24 setups running OTS maps versus custom tunes to settle the debate once and for all. The data reveals exactly why AFR consistency matters more than peak numbers.
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Why Your Knock Sensor Data Doesn’t Match How E85 vs 93 Feels

That smooth E85 pull that felt amazing? Your knock sensor logged 47 events and pulled 8 degrees of timing. Here's why your butt dyno lies when fuel economics drive octane choices.
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Why Turbo Miata Builds Fail: The Wastegate Preload Problem

Most turbo Miata builds grenade because owners ignore wastegate actuator preload, causing dangerous overboost spikes under load. Your boost control setup matters more than peak power numbers.
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Is E85 Worth It for STI? Real Data on Power vs Complexity

E85 conversion on your STI isn't just about peak power gains. The real advantage is knock resistance that lets you run 2-3 degrees more timing advance, but only if you monitor ethanol content religiously.
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Why 11.8 AFR on E85 Melts Honda Civic Si Pistons

That 11.8 AFR reading looks safe, but it's actually the most dangerous zone for E85 Civic Si builds. The uneven burn patterns in this range create hotspots that melt pistons faster than lean conditions.
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FA24 Knock Detection: Why the 2022+ WRX Tunes Differently Than EJ

The FA24's direct injection system changes everything about knock detection compared to EJ engines. Most tuners still use EJ strategies, leaving power on the table.
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Why Do Big Intercoolers Kill Power? The Pressure Drop Problem

That massive front-mount intercooler dropping your charge temps 25°C sounds great until you see the dyno sheet. The real story is in the pressure drop data your tuner should have checked first.
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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.
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Categories

  • 370Z
  • Boost Control
  • Chassis Tuning
  • Cooling Systems
  • Data Analysis
  • Data Logs
  • Datalog Analysis
  • Diagnostic Guides
  • Diagnostics
  • DIY Guides
  • DIY Installation
  • DIY Modifications
  • Dyno Testing
  • E85
  • E85 Conversion
  • E85 Tuning
  • ECU Management
  • ECU Tuning
  • EJ257 Performance
  • Engine Analysis
  • Engine Management
  • Engine Monitoring
  • Engine Protection
  • Engine Swaps
  • Engine Tuning
  • Fuel Systems
  • Golf R
  • Honda
  • Honda Performance
  • Intercooler Testing
  • Intercoolers
  • Miata Builds
  • Modifications
  • MX-5
  • Nissan
  • Nissan 370Z
  • Performance Analysis
  • Performance Builds
  • Performance Comparisons
  • Performance Data
  • Performance Modifications
  • Performance Testing
  • Performance Tuning
  • Performance Upgrades
  • SR20DET
  • STI Tech
  • Subaru
  • Subaru Performance
  • Subaru STI
  • Suspension Tuning
  • Toyota Supra
  • Track Prep
  • Troubleshooting
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  • Turbo Systems
  • Turbo Tuning
  • Turbo Upgrades
  • Turbocharging
  • Vehicle Dynamics
  • Volkswagen
  • VQ37 Platform
  • WRX Performance
  • WRX STI Tech
  • WRX/STI

AFR AFR monitoring AFR tuning APR intercooler baseline diagnostics boost control boost pressure charge air temperature Civic Type R datalog analysis datalogging data logging datalogs detonation dyno testing dyno tuning E85 tuning ECU tuning EJ257 engine damage engine knock engine tuning false knock detection heat soak Honda Civic Si Ignition Timing intake air temperature intercooler knock retard knock sensors pressure drop seasonal tuning spring tuning Stage 2 stock turbo Subaru tuning timing advance timing maps timing retard turbo miata turbo tuning VQ37VHR wastegate duty cycle WRX diagnostics WRX STI

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