GM 1994-1995 LT1 / L99 OBD1 ECM/PCM VATS Delete & Tuning Service

GM LT1 / L99 OBD1 ECM/PCM VATS Delete & Tuning Service

Mail-In Service for 1994-1996 Corvette, Camaro, Firebird, Trans Am, Caprice, Impala SS, Roadmaster, Fleetwood

Eliminate VATS anti-theft problems and unlock more power from your LT1 or L99 engine. Send us your ECM/PCM for fast, reliable modifications – ideal for engine swaps, no-start fixes, performance upgrades, or modern remote start installs.

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Contact Us

Text, email, or WhatsApp us for questions, VIN confirmation, or compatibility checks.

What Is This Service?

You remove the ECM/PCM from your vehicle and ship it to us. We handle the VATS delete and any requested tuning, then ship it back quickly.

This service disables the Vehicle Anti-Theft System (VATS) in your OBD1 ECM/PCM for 1994-1996 GM vehicles with LT1 (5.7L) or L99 (4.3L) engines. We can perform VATS delete on all compatible LT1/L99 computers.

💲 Choose Your Service Option

Option	Includes	Best For
1) VATS Only	VATS (vehicle anti-theft system) removal/disable	Engine swaps, crank no-start fixes, remote start installs, donor ECM use
2) Basic Service	Basic Service – Swaps, Cams, & Base Startup Tune VATS removal Cam upgrades (if applicable) – NOT a full performance tune, but MUCH better than stock for startup/break-in Engine swap diagnostics cleanup (disable unused sensors) Basic settings edits (eFans on/off temps, speed limiter removal, rev limiter, etc.) Order and pay first, then complete the Custom Tune Order Form (link in main menu)	Modified setups needing clean, reliable operation
3) More Power!	Premium Service – Tune for More Power on your LT1 / L99 Includes everything in Basic Service plus: Optimized ignition timing, air/fuel ratios, torque management, power enrichment, and more Result: Noticeable power gains, better throttle response, smoother drivability, potential MPG improvement Gains on stock hardware (headers, cats, etc.) – estimated/typical, requires premium 91/93 octane Results vary by setup, based on real-world tuning experience: 5.7L LT1 – +20-25 HP / +20-25 ft/lb TQ 4.3L L99 – +15-20 HP / +15-20 ft/lb TQ	Daily drivers, performance upgrades, max potential

Why Delete VATS?

• Engine swaps or ECM/PCM replacement
• Avoid expensive dealer programming or key relearns
• Fix faulty VATS causing no-start issues
• Enable remote start or aftermarket security

Supported Applications

• 1994-1996 Chevrolet Corvette (C4)
• 1994-1997 Chevrolet Camaro (base, Z28, etc.)
• 1994-1997 Pontiac Firebird / Trans Am
• 1994-1996 Chevrolet Caprice (including Impala SS & 9C1 police package)
• 1994-1996 Chevrolet Impala SS
• 1994-1996 Buick Roadmaster (sedan & Estate Wagon)
• 1994-1996 Cadillac Fleetwood
• Engines: LT1 5.7L V8 (RPO LT1, VIN P) & L99 4.3L V8 (RPO L99, VIN W – primarily in base Camaro/Firebird & Caprice)
• OBD1 ECM/PCM (common service #’s: 16188051, 16181333, 16209695, 16263494, etc.)

Note: This is for 1994-1995 OBD1 flash-based units primarily. Some 1996-1997 models transitioned to OBD2 – contact us with your ECM service number, VIN, or year for confirmation.

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📦 Shipping Instructions (To Send Your ECM/PCM to Us)

1. Remove your ECM/PCM from the vehicle (Try “YouTube University” for how-to videos for your model)
2. Package securely with padding
3. Fill out the Tune Request menu above (order first for order #) or include a note with:
   • Answers to any form questions
   • Phone number and email
   • Order number
   • Custom requests (eFans, speed limiter off, DTC deletes, etc.)
4. USPS recommended for our secure locked mailbox; UPS/FedEx ok but may delay delivery
5. Ship to:
   PCM Tuners
   367 N Clarendon Ave, Unit 7
   Scottdale, GA 30079

⏱️ Turnaround Time

• VATS only is 1 business day (typical) after receipt
• VATS + Settings Adjust/Performance Tune is 1–3 business days
• Return shipping via tracked carrier (we cover cost)
• Expedited/rush service available – options at checkout

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🔑 Primary Keywords
LT1 VATS delete	C4 Corvette VATS delete
Camaro LT1 tuning	Firebird LT1 PCM service
Impala SS VATS delete	Trans Am LT1 tuning
OBD1 LT1 tuning service	L99 VATS disable
Caprice LT1 ECM tune	Roadmaster VATS delete

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