GM Tuning
This is what we do. Hi-Rev Dyno & Engine lives and breathes GM — Gen III/IV/V LS and LT combinations dialed in on our in-house chassis dyno, right here in Rialto. Bolt-ons to boost, cam swaps to full race calibrations, we build the tune that makes your combo actually deliver — AFR, spark, idle, torque management, and transmission, all under load until it's right.
GM Calibration, Done Right
From a mild bolt-on daily to a boosted race build, every GM tune we write is tailored to your exact combination — hardware, fuel, and how you actually drive it. No canned files, no guessing.
Cam, Stall & Bolt-On Tunes
Headers, intake, throttle body, converter, and cam swaps — we rewrite the calibration around your combo so it idles clean, drives right, and makes power everywhere it should. VVT and AFM/DOD handled for cammed builds.
- Cam, headers & intake calibration
- Stall converter & idle tuning
- MAF/VE, spark & drivability dialed
Forced Induction
Turbo and supercharger builds are our wheelhouse. We manage boost-referenced fueling and timing, knock control, and torque limits so a blown or turbo LS/LT makes safe, repeatable power — single, twin, or positive-displacement.
- Turbo, centrifugal & roots/twin-screw
- Boost-referenced fuel & spark
- Safe knock & torque management
Nitrous
Wet or dry, single or progressive — we set the fuel and timing tables so your shot lands hard and clean. Retard, enrichment, and safeties built in so you're not leaning out mid-blast.
- Dry & wet nitrous calibration
- Timing retard & fuel enrichment
- Progressive controller support
E85 & Flex Fuel
Unlock the octane. We convert to true flex fuel — add a content sensor and we blend fuel and spark automatically across any ethanol percentage — or dedicate a straight E85 tune for maximum power on pump corn.
- Flex-fuel sensor enable & blending
- Dedicated E85 calibration
- Cold-start & injector scaling
Engine-Swap Calibration
Dropping an LS or LT into a hot rod, truck, or import? We clean up the swap tune — disable VATS, delete missing emissions and EVAP hardware, correct for standalone harnesses, and get it firing and running like it belongs there.
- VATS / anti-theft disable
- Missing-hardware & code cleanup
- Harness & sensor corrections
Transmission & Torque Management
Shift quality is half the tune. We firm up shifts, set line pressure, lock the converter where you want it, and manage torque so an automatic shifts crisp and lives behind big power — 4L, 6L, 8L and 10-speed.
- Shift points, firmness & line pressure
- TCC lockup & converter strategy
- Torque-management tailoring
LS, LT & GM Trucks
Three generations of GM small-block V8, plus the trucks and SUVs they came in. If it's GM and it's got a cammable V8 or a factory PCM/ECM we can talk to, odds are we tune it.
Engine Platforms
Transmissions
Our primary platform for factory PCM/ECM tuning — VCM Suite for full factory access, live data-logging, and calibration across Gen III through Gen V LS/LT and the automatics behind them.
We also tune the full Holley EFI lineup — Terminator X, Sniper, HP, and Dominator — standalone self-tuning ECUs dialed in on the dyno for swaps, carb conversions, and standalone builds.
Two Ways To Get Tuned
Roll it onto our dyno for a full in-house session, or stay home and mail it in — data-log your own car and we build and revise the calibration remotely. Same GM know-how either way.
In-House Dyno Session
Bring the car to Rialto and we tune it under load on our chassis dyno. We make real pulls, dial fuel and timing where the engine actually sees load, verify knock and AFR, sort drivability and shifts, and hand you a repeatable, safe calibration with numbers to back it up.
Remote / Mail-In
Can't make the trip? Data-log your car on HP Tuners or Holley EFI at home and send us the logs — or ship us your PCM/ECU. We revise the tune, send the file back to flash, and repeat until it's right. Full details on our Remote & Mail-In Services page.
Tell Us Your Combo
Send year/make/model, engine, trans, fuel, and every mod — cam, boost, nitrous, injectors. We confirm the platform and lay out the plan.
Dyno Or Log
Book a dyno slot and roll in, or — going remote — grab clean data-logs on HP Tuners or Holley EFI and send them over. We tell you exactly what to pull.
We Calibrate
Fuel, spark, idle, torque management and transmission dialed under load — forced induction, nitrous and E85 safeties built in and verified.
Dialed & Delivered
Drive away with a safe, repeatable tune — or flash the finished file remotely. We stay on it until the combo runs exactly how it should.
Book A Tune
Send us your combo and what you're chasing — we'll confirm the platform, book your dyno slot or set up the remote job, and get your GM running exactly how it should.