GM VATS-OFF (memcal)
GM 1986-1993 memcal - Camaro, Firebird, Trans Am, Corvette ($8D: 1227727/1227730 TPI; $DA3: 16159278 LT1) - 32 KB 27C256 read
Instant VATS anti-theft delete for a 1986-1993 GM memcal calibration. Upload your 32 KB 27C256 read, pay, and download the VATS-OFF file - the anti-theft enable bit is cleared and the calibration checksum corrected, ready to burn. Your own calibration is preserved: only the VATS byte and the checksum change. Byte-verified, and if your file has no VATS to remove you are not charged.
Upload your read
Drop in your original ECU read. We check it free — no charge if we can't process it.
Pay securely
$150 via Stripe. Real payment, instant receipt.
Download unlocked
The unlocked file is generated and downloads immediately. Re-download anytime from your private link.
Version-locked & byte-verified
We only hand back a file we know is clean — every patch is validated against known-good reference files and the checksum is verified before you download. If we can't process yours cleanly — wrong file, unsupported version, or a read we don't recognise — you're told immediately and not charged. No guesswork ever gets written to your ECU.