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FiTech 70002 Ultimate LS EFI, LS1/LS2, 500 HP, w/ Trans Control
FiTech 70002 Ultimate LS EFI, LS1/LS2, 500 HP, w/ Trans Control

FiTech 70002 Ultimate LS EFI, LS1/LS2, 500 HP, w/ Trans Control

Chevy LS V8, 4L60E, 4L65E, 4L80E, 4L85E, Transmission Control

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FiTech 70002 Ultimate LS EFI, LS1/LS2, 500 HP, w/ Trans Control
FiTech 70002 Ultimate LS EFI, LS1/LS2, 500 HP, w/ Trans Control
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FiTech estimates this item will ship on or before January 18th.
Part # 52170002
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  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.


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The FiTech 70002 Ultimate LS EFI kit is the ultimate LS ECU for DIY enthusiasts who want full control over their engine and transmission. Avoid having to buy additional software programs, learning how to think in computer code, or relying on a questionable 3rd party tuner. FiTech puts the engine and transmission EFI management back in your hands. The included color touch screen handheld controller allows for custom tuning adjustments to your LS engine as well as a self-learning program to get you on the road.

Leave the factory LS computer, wiring harness and intake in the junkyard where they belong. The FiTech Ultimate LS combo is a perfect match for 5.3 LS and 6.0 LS truck motors with tall and not so elegant factory intakes. The low profile fabricated sheet metal intake features short runners for a tricked out engine bay as compared to factory plastic engine covers. FiTech technology is custom cam friendly and is suitable for use with most 4.8 LS, 5.3 LS, LS1/LS6, and 6.0 LS engines with cathedral port cylinder heads producing up to 500 HP.

Kit includes:

  • Fabricated LS sheetmetal intake manifold
  • 92mm billet LS throttle body
  • Fuel rail with 36 lb/hr fuel injectors
  • Handheld controller with data logging capability and windshield mount
  • Fully programmable self-learning LS ECU
  • LS wiring harness 
  • Wideband O2 sensors

FiTech 70002 also includes a feature to control GM electronically controlled automatic transmissions. This allows you to configure shift points, shift firmness, when to downshift, among other features. Compatible GM transmissions include the 4L60E, 4L65E, 4L80E, and 4L85E. Other LS engine-only ECUs are avaialble in the FiTech Ultimate LS Series if you're using a different transmission.

Installation Instructions (PDF)


Intake manifold will fit Cathedral Port LS1/LS2/LS6 heads. Transmission control feature is suitable for 4L60, 4L65, 4L80 or 4L85 GM transmissions.

Small Block V8 GEN. III/IV LS-based Chevrolet street and performance engines with a 1500-6500 rpm power-band up to 500 HP at the flywheel.

  • 4.8 L / 293 c.i. LR4, LS1, LS2, LS6
  • 5.3 L / 325 c.i. L33, L59, LM4, LM7
  • 5.7 L / 346 c.i. LS1, LS6
  • 6.0 L / 364 c.i. LQ4, LQ9, LS2


Parts required, not included:

  • Coil packs 
  • Supported Fuel System (ie. FiTech part number 40004, 40005, 40007, 40015, 40019 or other comparable fuel systems). 

Optional, not included:

  • Throttle cable mounting bracket (FiTech part number 70063)



Some parts are not legal for use in California or other states with similar laws/regulations

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  • Now that Project Chevelle is making some real power, it's time to give it a little more fuel. Follow along as we install a new tank and pump from Tanks Inc.
  • After installing the intake manifold and carbs on his 8BA, Heath P. continues on to the fuel and throttle setup. See how he mounts each part while making modifications to complete the install.

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