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Description
Holley EFI Terminator X Stealth GM LS 4150 - Gold 550-106258X Crank 4 Injectors 650 HP Features: All of the wiring exits below the fuel injector bowls, for a completely stealth installation Air entry machined to fit most stock style air cleaners with air cleaner locator provisions External fuel pressure regulator required, set to a base pressure of 58. 5 PSI, such as 12 886 Integrated ignition timing control ?"Plug and play with factory LS coil sub harness and OEM LS coils ?" no external boxes modules needed
58X Crank - 4 Injectors - 650 HP
Features:
- All of the wiring exits below the fuel injector bowls, for a completely stealth installation
- Air entry machined to fit most stock style air cleaners with air cleaner locator provisions
- External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886
- Integrated ignition timing control ?"Plug and play with factory LS coil sub harness and OEM LS coils ?" no external boxes/modules needed to run Coil Near Plug
- High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
- Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
- Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
- Self-tuning ECU means you don?™t have to be a computer/tuning wiz to have EFI!
- 4 Inputs ?" 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (Fuel and Oil Pressure Inputs are pre-terminated)
- 4 Outputs ?" Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
- The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
- OEM Style TPS/IAC, for years of dependable service
- Available in 3 finishes: Shiny, Black and Gold
- Compatible with Holley EFI digital dashes, gauges and fuel system accessories
Specs:
| Accelerometer Support | Yes |
|---|---|
| Boost Control | Yes |
| Brand | Holley EFI |
| CAN-BUS Support | Yes |
| CFM | 950 |
| Coil Per Cylinder Ignition Support | Yes |
| Color | Gold |
| Crank Reluctor | 58x |
| Datalogging Support | Yes |
| Distributor Included | No |
| Dry Nitrous Control | Yes |
| e85 Support | No |
| EGT Support | Yes |
| Emission Code | 3 |
| Finish | Gold |
| Flange Size | 4150 |
| Flange Style | Squarebore |
| Forced Induction Support | Yes |
| Fuel Filter Included | No |
| Fuel Hose Included | No |
| Fuel Injectors Included | Yes |
| Fuel Pressure | 58.5 PSI |
| Fuel Pressure Regulator Included | No |
| Grade Type | Performance |
| Handheld Included | Yes |
| Ignition Timing Control | Yes |
| Ignition Type | GM LS 58x |
| Individual Cylinder Fuel Corrections | No |
| Injector Size | 100 lb/hr @ 58.5 PSI |
| Inlet / Outlet Size | 6AN |
| Intake Manifold Included | No |
| Knock Retard Support | Yes |
| MAP Sensor | 1bar |
| Max Horsepower Rating | 650 |
| Multi-Stage Nitrous Control | Yes |
| Product Type | EFI System |
| Progressive Nitrous Control | Yes |
| Sale Category | Air and Fuel Delivery |
| Self-Tuning | Yes |
| Terminator LS Options | Fuel, Spark |
| Throttle Bore | 1.75 in. |
| Throttle Position Sensor Included | Yes |
| Transmission | N/A |
| User-Tuneable | Yes |
| Warning | California Proposition 65 |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Beautiful Crossbody Bag
Color: Pure Black, Color: Pure Black
Two separate zippered compartments, one with a zippered compartment inside and one with two equal size pockets. Two external zippered compartments. The zippers and all hardware is black so no brassy gold or shiny silver on this classy bag. Beautiful leather at an affordable price. It’s easy to find the right strap length to suite the size of your body and arm length, easy to use and more than a little attractive. A long rectangular wallet fits and no matter what size phone you have, it fits. Eyeglass case, no problem. Comes with a black tassel which I replaced with the initial (sold separately).I love it and highly recommend it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 31, 2024
★★★★★ 5
Nice Purse
Color: Pure Black
I love this purse! It has lots of room and pockets for its size. I appreciate that the zipper and accents are black and not gold or silver as it just seems to blend in nicely. I also like that my phone fits perfectly in the front pocket for easy access.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2025
★★★★★ 3
Not real leather, but cute
Color: Z-mocha Brown
Description uses "leather" in description . Not soft . Cute and lots of pockets as described.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 2, 2024
★★★★★ 4
Great Travel Purse
Color: Pure Black
This purse is a great size and shape with excellent pockets. I use it mostly for travel because it’s not too heavy. If I could change anything it would be the color of the lining to a lighter or brighter color and to tack the lining down more securely. Otherwise it’s a very good purse.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 6, 2025
★★★★★ 5
Great purse
Color: Black Brown
Perfect little purse and it fits everything that I like to carry with me and it goes with everything
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
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