Torque Metrics

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.

Why Turbo Miatas Knock at 4500 RPM: Fixing the Timing Map

That predictable knock wall at 4500 RPM in your turbo Miata isn't random. Stock ignition timing maps assume naturally aspirated conditions, creating dangerous timing advance under boost.

Spring Tune Transition AFR Spikes: Why They Destroy Engines

Switching from winter to performance tunes creates hidden AFR spikes that can destroy engines in minutes. The datalog evidence shows why most seasonal tune transitions fail catastrophically.

Why Big Front-Mount Intercoolers Kill Turbo Miata Response

That massive front-mount intercooler is destroying your turbo Miata's response time and heat management. Core volume matters more than surface area when it comes to real-world driving performance.

Why Electronic Boost Control Fails on Modified Subarus

Most Subaru owners chasing boost control issues throw money at wastegates and solenoids when the real problem is in the tune. Your duty cycle tables are probably mapped wrong, and the data will show you exactly what's happening.

Common Tuning Myths That Your Datalogs Will Prove Wrong

Forum wisdom says lean AFR equals more power and advanced timing is always better. Your datalogs tell a different story entirely.

What’s the Optimal Ignition Timing for E85 on Supra and 350Z Builds?

Most tuners push ignition timing too hard on E85, assuming more is always better with race fuel. The data from Supra and 350Z builds tells a different story about where peak torque actually lives.

Engine Weight Changes: How Much Difference Actually Matters?

Most swappers focus on power gains while ignoring weight distribution. A 50kg difference between engines creates cascading effects on suspension geometry, brake bias, and ECU calibration that show up in your datalogs.

Weight Distribution: Why Engine Swaps Fail Before Tuning Begins

That dream LSX swap might add 400hp, but it also shifts 150lbs forward and destroys your chassis balance. Understanding weight distribution through data analysis prevents expensive handling disasters.

Why Miata Intercooler Upgrades Lose Power on Stock Tune

A bigger intercooler should mean more power, but Miata owners regularly see 10-15whp losses after upgrades on stock tunes. The culprit is timing retard triggered by MAP sensor readings the ECU wasn't calibrated for.

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.

Spring ECU Tuning Mistakes That Destroy Engines

Spring tuning season brings three expensive mistakes that destroy engines: ignoring knock retard over 4 degrees, running excessive boost on stock internals, and missing heat soak warnings in your data. Here's what the numbers actually mean and how to avoid a $15K rebuild.

Tuning Knowledge & Insights

Tuning Knowledge
& Insights