Products to Compare (max of 3)
Compare These Parts
Talk to the Experts. Call 800.979.0122, 7am-10pm, everyday.
Customer Service
Since 1952
  • Expert Tech Support
  • Huge Inventory
  • Fast Shipping
Talk to the Experts. Call 800.979.0122
Shop By
Street Race Truck More... The Toolbox
Add to Cart
FiTech 70050 Ultimate LS Standalone EFI ECU w/o Trans Control
FiTech 70050 Ultimate LS Standalone EFI ECU w/o Trans Control

FiTech 70050 Ultimate LS Standalone EFI ECU w/o Trans Control

Not Transmission Control

1 Review | 2 Answered Questions
On Backorder
Ships FREE
Select your vehicle to verify fitment.
Select Vehicle
FiTech 70050 Ultimate LS Standalone EFI ECU w/o Trans Control
FiTech 70050 Ultimate LS Standalone EFI ECU w/o Trans Control
Zoomed In Image
FiTech estimates this item will ship on or before August 1st.
Part # 52170050
Add to Cart
Call to Order
Add to Buildlist

Videos & Articles

Important Messages:

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.


Sold in Quantity:
GTIN Code:
MFG. Part #:
Transmission Control:


No dyno, no tuner, no factory re-flashed ECU! The FiTech 70050 Ultimate LS Standalone EFI ECU kit is the ultimate LS swap computer for DIY enthusiasts who want full control over their engine management. Avoid having to buy additional software programs, learning how to think in computer code, or relying on a questionable 3rd party tuner. The included color touch screen interface allows for custom tuning adjustments to your LS engine as well as a self-learning program to get you on the road. FiTech Ultimate LS EFI is the perfect product for using the factory GM intake, throttle body, and injectors, while leaving the factory GM computer and harness in the junkyard where they belong. FiTech technology is custom cam friendly and is suitable for use with most 4.8 LS, 5.3 LS, LS1/LS6, 6.0 LS, 6.2 LS, and LS7 GM engines.

Kit includes LS engine wiring harness, standalone LS ECU, one wideband O2 sensor and a handheld tuner. The FiTech 70050 is an engine-only ECU, however other FiTech Ultimate LS EFI ECU kits are available to control both engines and electronic transmissions.

Installation Instructions (PDF)


Kit comes with one 02 sensor.  If you'd like to run a second, you may want to source a Bosch 17014 from your local auto parts store.



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

More Like This


Q & A

Videos & Articles
  • Do you have carbs sitting on the shelf waiting to be put on? Heath talks about the preparation and parts needed to install a set of Super 9-7 Carbs on his 1949 Flathead 8BA V8 Model A.
  • One of the most important parts of your racing operation is the engine. This article gives a detailed overview on how to maintain your engine to get the most out of it for as long as possible. Also learn some tips to prolong the life of your engine.
  • For most, an electric fuel pump can be a choice of form over function, but for others, it may be the best option. In this article, you will learn the advantages of using an electric fuel pump and how to install it in your car.

You May Also Like