Holley EFI Terminator X Max 6l80/6l90 Transmission Kit

Holley EFI Terminator X Max 6l80/6l90 Transmission Kit

Marsoni

M251S

$293.98

Get it in 3 business days with 1 day shipping. Friday, May 29

Holley EFI Terminator X Max 6l80/6l90 Transmission KitOVERVIEW Add GM 6L80 90E transmission control to any existing vehicle utilizing a Terminator X Max ECU. A departure from traditional Holley EFI transmission control, the Terminator X Max ECU allows the ability to use 2007+ GM 6L80E and 6L90E transmissions by communicating via CAN with the internal TCM (Transmission Control Module). The supplied Holley EFI OBDII Transmission Tuning Handheld is used to adjust Shift Points, Tire Size and Gear Ratio. The

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Reviewed in the United States on June 24, 2025

Verified Purchase

Dave Roberts

Los Angeles, US

★★★★★ 5

Well worth the price.

Great fit and quality feel.

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Reviewed in the United States on November 3, 2025