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$1,884.60
FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control
FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control

FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control

Universal Fit, Sequential multi-port Injection Style, Speed density Metering Style, Anodized

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FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control
FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control
FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control
FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control
FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control
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FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control
FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control
FiTech 70003 Ultimate LS EFI, LS1/LS2, 750 HP, w/o Trans Control
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  • Comes with 102mm billet LS throttle body and fuel rail with 55 lb./hr. fuel injectors
  • Intake features short runners for a tricked out engine bay as compared to factory plastic engine covers
  • This 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
  • It 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 750 HP
  • 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

Details

Notes:
Supports up to 750 Horsepower
Sold in Quantity:
Kit
GTIN Code:
856291005701
EGR:
No
Injection Style:
Sequential multi-port
MFG. Part #:
70003
Metering Style:
Speed density
Intake Manifold Included:
Yes
Intake Section Included:
Complete
Fuel Rails Included:
Yes
Throttle Body Included:
Yes
CFM:
1000 CFM
Transmission Control:
No
Injectors Included:
Yes
Calibration Module Included:
Yes
Wiring Harness Included:
Yes
Fuel Pump Included:
No
Distributor Included:
No
TPS Sensor Included:
Yes
IAC Motor Included:
Yes
IAT Sensor Included:
Yes
MAP Sensor Included:
Yes
Fuel Pressure Regulator Included:
No
ECM Included:
Yes
Injector Size:
55 lbs/hr
Throttle Body Finish:
Anodized
Throttle Body Material:
Billet Aluminum
Venturi Quantity:
1
Intake Material:
Aluminum
Intake Finish:
Anodized
Color:
Black

Info

The FiTech 70003 Ultimate LS EFI kit is the ultimate LS ECU for DIY enthusiasts who want full control over their engine. 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 750 HP.

Kit includes:

  • Fabricated LS sheetmetal intake manifold
  • 102mm billet LS throttle body
  • Fuel rail with 55 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 70003 includes an engine-only ECU, however other FiTech Ultimate LS EFI kits are available to control both engines and electronic transmissions.

Application

  • Intake manifold will fit Cathedral Port LS1/LS2/LS6 heads.
  • Small Block V8 GEN. III/IV LS-based Chevrolet street and performance engines with a 1500-6500 rpm power-band up to 750 HP to the flywheel and contains a 3 BAR MAP sensor for power adder applications that supports up to 30 PSI of boost.
  •   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

Notes

  • Intake manifold is 6.5 inches tall.
  • 102mm high flow cable operated throttle body sits at 7 degrees.
  • Throttle body will clear any stock truck accessories depending on the type of water pump, if there is truck water pump accessory clearance interference you will need to get a new water pump bracket.

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)

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Installation Instructions (PDF)

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

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