PINE RUN TUNING
LS-swapped Jeep Cherokee climbing a rock formation.
PUNXSUTAWNEY, PENNSYLVANIA AREA
GM performance tuning and EFI diagnostics.
From the first start to dialing in your combination.
GM LS / GEN V · HP TUNERS® · HOLLEY EFI®
01 / WHAT WE DO
Tell us what’s under the hood, what’s changed, and how you want it to drive. We’ll discuss the right next step for your setup.
LS and Gen V tuning with HP Tuners. Calibration for cam and injector changes, drivability, and transmission behavior.
Help with Holley EFI setups, engine swaps, startup, idle, and fuel and ignition calibration.
No-starts, poor running, and combinations that won’t cooperate. Diagnose the underlying problem before chasing the tune.
02 / THE DATA BEHIND THE DRIVE
A calibration is more than changing a few tables. We compare commanded behavior with what the engine and transmission actually report, then make measured changes and verify the result.
Commanded versus measured mixture, wideband feedback, short- and long-term fuel trims.
Air mass, manifold pressure, volumetric efficiency, throttle position, and engine load.
Commanded spark advance, knock retard, cylinder behavior, and misfire information.
Injector characterization, pulse width, duty cycle, pressure data, and transient fueling.
Air and coolant temperature, oil pressure when available, battery voltage, and compensations.
Shift timing, torque management, commanded pressure, gear state, and converter slip.
Available channels vary by ECU, operating system, sensor package, and vehicle configuration.
VCM Scanner + VCM Editor
Scanning, diagnostics, calibration, and validation for supported GM applications.
Holley EFI + Terminator X
Startup, idle, fuel, ignition, driveability, and swap integration.
FROM THE ARCHIVE / PREVIOUS CALIFORNIA SHOP
03 / A REAL DIAGNOSIS
The owner had spent seven years unable to get this supercharged project running. Within an hour of getting involved, we had it running.
The culprit was an injector O-ring inside the blower hat, leaking unmetered fuel into the engine and flooding it. Fixing the fuel leak came first. Tuning followed at our previous California shop.
Seven years without running. An injector O-ring inside the blower hat was leaking fuel and flooding the engine. The leak was corrected, the engine ran, and tuning followed at the previous California shop.
04 / HANDS-ON EXPERIENCE
A look at past projects, from EFI troubleshooting to an LS-swapped Cherokee running Holley Terminator X.
LET’S TALK ABOUT YOUR BUILD
Serving the Punxsutawney, PA area.
Contact us to discuss your vehicle and service arrangements.
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