ECU PROM Chip — “Phaze 3” (Aftermarket)

This ECU chip appears to be an aftermarket performance PROM labeled “Phaze 3”, intended for the 1986–1987 Turbo Buick platform. “Phaze” chips circulated in the early aftermarket tuning era and were known for offering more aggressive performance calibrations than OEM chips.

🟡 Yellow Dot –Aftermarket Tune Performance Unknown 

🔧 Compatibility:
• 1986–1987 Buick Grand National / Turbo T / T-Type / GNX
• Fits OEM 1227148 ECU (factory Turbo Buick computer)

📦 Includes: Chip only (as pictured)

Condition Notes:
• Aftermarket “Phaze 3” label
• Pins intact, no corrosion observed
• Exact tune details are unknown

Why You Want It:
A solid choice for collectors of vintage Turbo Buick performance chips or anyone interested in testing retro tuning strategies. Great for nostalgia builds, bench testing, or preserving aftermarket history within the Turbo Buick community.

⚠️ Disclaimer:
Tune parameters are unknown and have not been verified by T6P. All items are sold as-is with no returns or exchanges. Buyer is responsible for verifying compatibility with their ECU and vehicle setup.