Description
Cadillac CTS-V Gen 1 5.7L LS6 / 6.0L LS2 HP Tuners Stage 1 Custom Remote Tune — Stock & Bolt-Ons
A fully custom HP Tuners calibration for your Cadillac CTS-V Gen 1 5.7L LS6 / 6.0L LS2 5.7L LS6 / 6.0L LS2 V8, written by N2 Speed for stock vehicles and builds with minor bolt-ons — exhaust, headers, cold air intake or a ported throttle body. This is not a canned file: we build the calibration around your VIN, your modification list and the fuel you actually run, then refine it from your data logs.
Who This Stage 1 Tune Is For
Stage 1 suits stock vehicles and builds with minor bolt-ons — exhaust, headers, cold air intake or a ported throttle body. If your build sits between two stages, email your mod list to sales@n2speed.com before ordering and we will tell you which package to buy.
Expected Gains
Typical results: 15-25 hp and 20-30 lb-ft at the crank on 93 octane. Gains vary with modifications, fuel quality, altitude and ambient temperature. We calibrate for reliable, repeatable power — not a dyno number you cannot drive.
What We Tune
- Ls6 and ls2 spark and fuel tables, maf and speed-density blending, idle quality and closed-loop behaviour, fan and cooling thresholds, throttle mapping and rev limiter
- Wide-open-throttle and part-throttle fueling
- Ignition timing with knock-safe margins for your fuel
- MAF and volumetric efficiency tables corrected for your airflow
- Throttle mapping and torque management limits
- Optional speed limiter removal, fan thresholds and drive mode tweaks
Vehicle Fitment
2004-2007 Cadillac CTS-V 5.7L LS6 and 6.0L LS2 (Tremec T56 6-speed manual only). The first-generation CTS-V was built as a manual only, so there is no transmission control module to calibrate. The ECM is unlocked and flashes straight through the OBD-II port.
HP Tuners Credits This Vehicle Needs
Total Credits Needed
Credits are how HP Tuners licenses each vehicle. They load onto your MPVI4 and are spent once, the first time the module is read. Adding transmission tuning means a second module is licensed, so the credit total goes up — the options above already include both.
- Engine Only — 2004-2007: 2 Universal Credits
Manual only. This car was never built with an automatic, so there is no transmission control module to license — engine credits are all you need.
Credit requirements are set by HP Tuners and can change with model year. If your car is not listed exactly, send your VIN to sales@n2speed.com and we will confirm before you buy anything.
What You Need
- HP Tuners MPVI4 with Pro Feature Set or another HP Tuners interface, plus credits for your vehicle
- Windows laptop with HP Tuners VCM Suite installed
- Ability to record and send data logs
- Wideband air/fuel gauge — recommended for this stage
HP Tuners RTD / TDN Network: We can also work with the HP Tuners RTD interface and the TDN (Tuner Dealer Network) — if you already run an RTD or are set up on TDN, we can deliver and revise your calibration through the network instead of emailing files. Email your VIN and setup to sales@n2speed.com and we will get you linked up.
What's Included
- One custom calibration built for your 5.7L LS6 / 6.0L LS2 V8 and modification list
- Revisions after log review until the vehicle is running correctly
- Direct email support with the tuner who wrote your file
- Turnaround: first file normally within 1-2 business days
Revision turnaround: Revisions are done in the order they are received during business hours. Set time frames are available with notice. After-hours and weekend revisions are done when available.
Locked Modules?
Cadillac does not lock this vehicle's engine computer the way Stellantis locks 2015 and newer Dodge PCMs, so tuning is a straight OBD-II flash — no unlock service needed. For modules that are damaged or will not communicate we offer GM PCM bench tuning service. Send your VIN and we will confirm before you spend anything.
Questions? Call (954) 406-8550 or email sales@n2speed.com. N2 Speed — Pompano Beach, Florida.
Warranty Information
