Unterminated Universal Harness, Includes NTK Oxygen Sensor
Unterminated Universal Harness, Includes NTK Oxygen Sensor
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Unterminated Universal Harness, Includes NTK Oxygen Sensor
Unterminated Universal Harness, Includes Bosch Oxygen Sensor
Overview
Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine along with additional controls for nitrous, boost or water meth.
ECU is certified to ISO 8846, SAE J1171 United States Coast Guard Requirements for Ignition Protection Fire Resistance. Holley HP EFI systems are equipped with 4 programmable inputs and 4 programmable outputs that are ideal for most vehicles with a single power adder. This feature allows the user to configure the system to support a wide range of controls including boost control, progressive nitrous, water/meth injection, speed inputs, fuel pump control, AC inputs, timing retard inputs and various other uses. When selecting an ECU, users need to ensure their planned controls can be run with the 4 inputs and 4 outputs as certain combinations may use more I/Os than are available. If more I/Os are required, users should choose the Dominator VMS.
Software and firmware updates can be downloaded here for free.
Features:
- Optional 5.7??? full-color touchscreen LCD allows easy on-the-fly tuning,data-logging or can be used as an easy to see graphical gauge panel
- Eight sequentially driven 8:2 peak and hold injector drivers, capable of driving up to 16 low or high impedance injectors as a standard feature. Multiple staged injector strategies
- Eight channel Distributorless Ignition (DIS)outputs capable of directly driving Smart??? ignition coils or Holley DIS coils. Will drive 2 wire coils with the addition of PN 554-112 high current coil driver module
- Plug and Play control of factory GM 24x and 58x LSx engines
- Integrated single channel wide band oxygen sensor control. Works with NTK sensors
- Internal data-logging standard with a huge 2GB of memory
- 4 Stage progressive nitrous control
- Turbo boost control
- Integrated water/methanol injection control
- Self-tuning fuel table strategy greatly simplifies tuning process
- Individual cylinder fuel and spark control allows you to unlock your engine??????s potential
- Works with 4, 6, 8 cylinder engines
- Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning
- Advanced idle, closed loop, and enrichment strategies allow for very stable operation
- ECU is fully potted and can be mounted in the engine compartment or interior
- Sealed automotive and marine grade connectors
- Allows for use of common OEM sensors as well as customer sensor calibration input
- Ignition Plug and Play with GM 24x and 58x LSx engines, GM HEI, Ford TFI, magnetic and hall effect trigger, and other ignition systems. New Plug and Play applications in process. Custom settings can be configured to allow many other applications
- 1-5 Bar MAP sensor capability
- Two channel knock control sensor Inputs for both one or two wire knock sensors
- Dedicated fuel and oil pressure inputs
- Controls both stepper and PWM Idle Air Control (IAC) motors
- Speed density, Alpha-N, or combination fueling strategies
- 4 Programmable high or low Pulse Width Modulated (PWM) outputs and 4 fully configurable inputs can be configured for use
- 4 Stage nitrous oxide control
- Fully featured nitrous control eliminates the need for a separate nitrous controller device
- Can be configured Wet??? or Dry??? with closed loop feedback
- Progressive control based on time, RPM, or boost, requires part # 554-111
- Lean or rich safety cutoff
- Full timing retard/control configurability per stage based on RPM or time
- Integrated Water/Methanol injection control
- Uses Holley Water/Meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter Water/Meth flow as a percentage of fuel injector flow
- Includes NTK Wideband Oxygen Sensor
Details:
- Ignition Type: Coil - (No Timing Control)
- Ignition Type: Ford TFI
- Ignition Type: GM HEI Small Cap
- Ignition Type: Holley Dual Sync Distributor
- Injector Connector: Jetronic / Minitimer (Bosch)
Links
EFI selection chart
Returns
Returns
What items are returnable?(eligible for returns)
- 30-day return policy, which means you have 30 days after receiving your item to request a return.
- In unused and resellable items, or defective items.
- In the original packaging with all the tags intact.
What items and exceptions are non-refundable?
- Digital Items like Tuning Credits for HP Tuners
- Gift cards.
- Discounted items (if applicable).
Damage, loss, or theft issues
- If the purchased product is faulty, reach out to us within 7 days of the delivered date.
- If the purchased product is loss, or theft, Please collect evidence and contact us immediately.
Refund solutions
- Refund to original payment method.
- Refund to your shopify store credit.
Refund policy
The Tuner Store accepts returns on new products within 30 days from the date of delivery. Items must be received in their original packaging material and in a new status. Used products or customer damaged products will not be accepted.
The Tuner Store reserves the right to apply a restocking fee to all returns. The purpose of this fee is to recover operational costs related to the purchase and the customer changing their mind.
When returns are the result of the manufacturer defect as determined by The Tuner Store, the return will not be subject to the above restocking fee.
How soon will I get my refund?
- After your return has been processed, you will receive a refund notice from us and it will take an additional 1-3 business days for the refund to be returned to your original payment method. The refund to the store credit is immediate.
- If more than 5 business days have passed since we’ve approved your return, please contact us at service@tunerstore.com.
Shipping
Shipping
All in-stock items are shipped on the first available business day. Most orders ship on the same or following business day.
Out of stock items are shipped as soon as they're available. Many items are built to order. Those items will have an average lead time on the product page.
All items on our website ship for free. However, a restocking fee equal to the shipping charges incurred by us, the seller will apply to all new condition items returned due to a customer changing their mind.
High value items will require a signature on delivery for your purchase protection. We will only ship to the verified billing address provided with the order.

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