2003 - 2007 LS LSX VORTEC 4.8 5.3 6.0 6.2 Standalone Multec Engine Wiring Harness | 4L60E, 4L80E, T56 Boost Taps You're probably thinking

You're probably thinking

It just gives you another port to hook up a catch can

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*Will Only Fit Oil Pans With A M14 x 1

2003 - 2007 LS LSX VORTEC 4.8 5.3 6.0 6.2 Standalone Multec Engine Wiring Harness | 4L60E, 4L80E, T56 Boost Taps You're probably thinkingThese harnesses are designed for retrofitting VORTEC 4. 8L, 5. 3L, 6. 0L, 6. 2L engines into older muscle cars and street rods or newer non emissions controlled vehicles. Harness allows use of the factory Vortec intake manifold and multec injectors with flex fuel injectors (EV6) optional (Please specify during checkout, adapters available). They are completely plug and play with four wire hookup (switched power, constant power and ground connections