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

#52170003

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

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

$2,107.00

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Product Summary

Universal Fit, Multi-port Injection Style, 1000 CFM CFM

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

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Key Specs

MFG. Part #	70003
Brand	FiTech
Injection Style	Multi-port
Injector Size	55 lbs./hr.
ECM Included	Yes

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FiTech 70003 Details

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

Charts

Installation Instructions (PDF)

Guides & Documents

Fuel Injection Systems Installation Instructions (52170003)

Warranty Information

Warranty

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

FiTech 70003 Specifications

KEY SPECS
MFG. Part #	70003
Brand	FiTech
Injection Style	Multi-port
Injector Size	55 lbs./hr.
ECM Included	Yes

GENERAL
CFM	1000 CFM
Injectors Included	Yes
Intake Manifold Included	Yes
Intake Section Included	Complete
Metering Style	Speed density (Map-N) or speed throttle (Alpha-N)
EGR	No
Throttle Body Included	Yes
Throttle Body Material	Billet Aluminum
Throttle Body Finish	Anodized
Intake Material	Aluminum
Intake Finish	Anodized
Venturi Quantity	1
Fuel Pump Included	No
Fuel Rails Included	Yes
Calibration Module Included	Yes
Wiring Harness Included	Yes
Fuel Pressure Regulator Included	No
Distributor Included	No
MAP Sensor Included	Yes
IAC Motor Included	Yes
IAT Sensor Included	Yes
TPS Sensor Included	Yes
Color	Black
Notes	This kit must be used with the factory coil pack sub-harness.
GTIN Code	854549007385
Sold in Quantity	Kit

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Questions & Answers

6 Questions • 6 Answers

Sort Questions

Do you have a kit for a 1996 Impala SS?

by Ron

• 7 years ago

1 answer

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Will this work with boost applications

by ryan

• 8 years ago

1 answer

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will this application support the use of nitrous? or other power adders aswell

by James

• 8 years ago

1 answer

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Do you make one for a 2010 silverado 4.8L

by Aaron

• 8 years ago

1 answer

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Will this work on a 2002 4.8 chevy sliverado? Also would it be alright to put this on an older engine or would it need to be newer to handle it all?

by Spinnerbait

• 8 years ago

1 answer

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Will this item fit a L31 ENGINE for a 1995 chevy tahoe? 5.7l 350 vortec L31 series

by Mike

• 8 years ago

1 answer

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6 of 6 questions shown

Fitment

2004-2005 Cadillac CTS

GM LS6

2006-2007 Cadillac CTS

GM LS2

2002-2011 Cadillac Escalade

GM LM7

2003-2006 Cadillac Escalade ESV

GM LM7

2002-2006 Cadillac Escalade EXT

GM LM7

2002-2006 Chevy Avalanche 1500

GM LM7

2000-2002 Chevy C1500

GM LM7
GM LQ4

1998-2002 Chevy Camaro

GM LS1

1997-2000 Chevy Corvette

GM LS1

2001-2004 Chevy Corvette

GM LS1
GM LS6

2005-2007 Chevy Corvette

GM LS2

1999-2014 Chevy Silverado 1500

GM LM7

2007 Chevy Silverado 1500 Classic

GM LQ4

2001-2003 Chevy Silverado 1500 HD

GM LQ4

2005-2006 Chevy Silverado 1500 HD

GM LQ4

2007 Chevy Silverado 1500 HD Classic

GM LQ4

2000-2004 Chevy Silverado 2500

GM LM7
GM LQ4

2001-2011 Chevy Silverado 2500 HD

GM LQ4

2007 Chevy Silverado 2500 HD Classic

GM LQ4

2001-2006 Chevy Silverado 3500

GM LQ4

2007 Chevy Silverado 3500 Classic

GM LQ4

2007-2011 Chevy Silverado 3500 HD

GM LQ4

2000-2006 Chevy Suburban 1500

GM LM7

2000-2006 Chevy Suburban 2500

GM LQ4

2000-2006 Chevy Tahoe

GM LM7

2006-2009 Chevy Trailblazer

GM LS2

2001-2006 GMC Savana 1500

GM LM7
GM LQ4

2007-2014 GMC Savana 1500

GM LQ4

2001-2005 GMC Savana 2500

GM LM7
GM LQ4

2006-2013 GMC Savana 2500

GM LQ4

2002-2005 GMC Savana 3500

GM LM7
GM LQ4

2006-2013 GMC Savana 3500

GM LQ4

2007 GMC Sierra 1500 Classic

GM LM7

2001-2003 GMC Sierra 1500 HD

GM LQ4

2005-2006 GMC Sierra 1500 HD

GM LQ4

2007 GMC Sierra 1500 HD Classic

GM LQ4

1999-2001 GMC Sierra 2500

GM LM7
GM LQ4

2002-2004 GMC Sierra 2500

GM LQ4

2001-2011 GMC Sierra 2500 HD

GM LQ4

2007 GMC Sierra 2500 HD Classic

GM LQ4

2001-2006 GMC Sierra 3500

GM LQ4

2007 GMC Sierra 3500 Classic

GM LQ4

2001 GMC Sierra C3

GM LQ4

2000-2011 GMC Yukon

GM LM7

2000 GMC Yukon XL 1500

GM LM7

2001-2011 GMC Yukon XL 1500

GM LM7
GM LQ4

2000-2011 GMC Yukon XL 2500

GM LQ4

2003-2007 Hummer H2

GM LQ4

1998-2002 Pontiac Firebird

GM LS1

2004 Pontiac GTO

GM LS1

2005-2006 Pontiac GTO

GM LS2