TOYOTA / LEXUS V8
STANDALONE WIRING &
ECU PROGRAMMING
Standalone wiring harnesses and OEM ECU programming for Toyota and Lexus V8 swaps, including 1UZ VVT-i, 2UZ-FE, 2UZ VVT-i, and 3UZ VVT-i engines. We build, repair, bench-test, and program engine harnesses for reliable standalone operation, immobilizer delete, manual conversions, and clean client plug integration.
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OEM STANDALONE
MANAGEMENT
Factory Toyota and Lexus ECU control adapted for engine swaps, keeping OEM reliability while removing the parts your conversion no longer needs.
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HARNESS BUILDS
& REBUILDS
Standalone harness conversions, damaged harness repairs, OEM rebuilds, and custom client plugs built around your engine, ECU, transmission, and chassis.
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ECU PROGRAMMING
Immobilizer delete, manual transmission conversion, DTC removal, speed limiter changes, and supported calibration changes for Toyota Lexus V8 ECUs.
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BENCH-TESTED
BEFORE SHIPPING
Every harness is inspected, pinned, and bench-tested before shipping so your 1UZ, 2UZ, or 3UZ swap starts with fewer unknowns.
WHO WE ARE
Lexus V8 Engines LLC is the evolution of Lextreme Engine Management Systems (PTY), founded in 2008 by Timothy Symons. With over 4,000 OEM-based standalone systems shipped worldwide, we specialize in Toyota and Lexus V8 wiring harnesses, ECU programming, immobilizer delete, client plug layouts, and swap support for builders who want factory ECU reliability in a custom chassis.
POPULAR PLATFORMS WE SUPPORT
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READY TO START YOUR PROJECT?
Send us your engine, ECU, transmission, chassis, and project goals. We will point you toward the right standalone wiring harness, ECU programming, client plug, and support path before you buy parts you do not need.